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diff --git a/2025.02.14/8Ex/Linux.rar b/2025.02.14/8Ex/Linux.rar
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index e1357cb..0000000
Binary files a/2025.02.14/8Ex/Linux.rar and /dev/null differ
diff --git a/2025.02.14/Makefile b/2025.02.14/Makefile
deleted file mode 100644
index b60e76f..0000000
--- a/2025.02.14/Makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-FLAGS = -fstack-protector-all -W -Wall -Wextra -Wunused -Wcast-align -Werror -pedantic -pedantic-errors -Wfloat-equal -Wpointer-arith -Wformat-security -Wmissing-format-attribute -Wformat=1 -Wwrite-strings -Wcast-align -Wno-long-long -std=gnu99 -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wold-style-definition -Wdeclaration-after-statement -Wbad-function-cast -Wnested-externs -O3
-
-%.out: %.o solve.o
-	 gcc $(FLAGS) $^ -o $@
-%.o: %.c
-	 gcc -c $(FLAGS) $<
-
-all: a01.out a02.out a03.out a04.out a06.out a07.out a08.out a09.out
-
-solve.o: solve.c solve.h
-
-clean:
-	 rm -f *.o *.out
diff --git a/2025.02.14/a01.c b/2025.02.14/a01.c
deleted file mode 100644
index 89c70fa..0000000
--- a/2025.02.14/a01.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task1(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task1(const char* f_in, const char* f_out, const char* s, int* res)
-{
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t1_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t1_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[])
-{
-    int task = 1;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4)
-    {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task1(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret)
-    {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a02.c b/2025.02.14/a02.c
deleted file mode 100644
index d89dc80..0000000
--- a/2025.02.14/a02.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task2(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task2(const char* f_in, const char* f_out, const char* s, int* res)
-{
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t2_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t2_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[])
-{
-    int task = 2;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4)
-    {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task2(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret)
-    {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a03.c b/2025.02.14/a03.c
deleted file mode 100644
index c201e58..0000000
--- a/2025.02.14/a03.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task3(const char* f_in, const char* f_out, const char* s, const char* t_param, int* res);
-
-io_status task3(const char* f_in, const char* f_out, const char* s, const char* t_param, int* res) {
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t3_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t3_process_file(f_in, f_out, s1, s2, t_param, res);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int task = 3;
-    io_status ret;
-    const char *f_in, *f_out, *s, *t_param;
-    int res = 0;
-    double t;
-    if (argc != 5) {
-        printf("Usage: %s <f_in> <f_out> <s> <t>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t_param = argv[4];
-    t = clock();
-    ret = task3(f_in, f_out, s, t_param, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret) {
-        case SUCCESS:
-            printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-            break;
-        case ERROR_OPEN:
-            printf("Can not open %s\n", f_out);
-            return 1;
-        case ERROR_READ:
-            printf("Can not read %s\n", f_out);
-            return 2;
-        case ERROR_PATTERN:
-            printf("Error in pattern %s\n", s);
-            return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a04.c b/2025.02.14/a04.c
deleted file mode 100644
index e166283..0000000
--- a/2025.02.14/a04.c
+++ /dev/null
@@ -1,60 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task4(const char* f_in, const char* f_out, const char* s, const char* t_param, int* res);
-
-io_status task4(const char* f_in, const char* f_out, const char* s, const char* t_param, int* res)
-{
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t4_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t4_process_file(f_in, f_out, s1, s2, t_param, res);
-    }
-}
-
-int main(int argc, char* argv[])
-{
-    int task = 4;
-    io_status ret;
-    const char *f_in, *f_out, *s, *t_param;
-    int res = 0;
-    double t;
-    if (argc != 5)
-    {
-        printf("Usage: %s <f_in> <f_out> <s> <t>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t_param = argv[4];
-    t = clock();
-    ret = task4(f_in, f_out, s, t_param, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret)
-    {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a06.c b/2025.02.14/a06.c
deleted file mode 100644
index 82b0e38..0000000
--- a/2025.02.14/a06.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task6(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task6(const char* f_in, const char* f_out, const char* s, int* res) {
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t6_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t6_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int task = 6;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4) {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task6(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret) {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a07.c b/2025.02.14/a07.c
deleted file mode 100644
index deb9928..0000000
--- a/2025.02.14/a07.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task7(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task7(const char* f_in, const char* f_out, const char* s, int* res) {
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t7_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t7_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int task = 7;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4) {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task7(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret) {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a08.c b/2025.02.14/a08.c
deleted file mode 100644
index 83d0cb9..0000000
--- a/2025.02.14/a08.c
+++ /dev/null
@@ -1,56 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task8(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task8(const char* f_in, const char* f_out, const char* s, int* res) {
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-
-        status = t8_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t8_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int task = 8;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4) {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task8(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret) {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/a09.c b/2025.02.14/a09.c
deleted file mode 100644
index 4caa8c7..0000000
--- a/2025.02.14/a09.c
+++ /dev/null
@@ -1,55 +0,0 @@
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "io_status.h"
-#include "solve.h"
-
-io_status task9(const char* f_in, const char* f_out, const char* s, int* res);
-
-io_status task9(const char* f_in, const char* f_out, const char* s, int* res) {
-    if (s == NULL) return ERROR_PATTERN;
-    else
-    {
-        size_t len_s = strlen(s);
-        io_status status;
-        char s1[len_s + 1], s2[len_s + 1];
-        memset(s1, 0, len_s + 1);
-        memset(s2, 0, len_s + 1);
-        status = t9_process_s(s, s1, s2, len_s);
-        if (status != SUCCESS) return status;
-        return t9_process_file(f_in, f_out, s1, s2, res);
-    }
-}
-
-int main(int argc, char* argv[]) {
-    int task = 9;
-    io_status ret;
-    const char *f_in, *f_out, *s;
-    int res = 0;
-    double t;
-    if (argc != 4) {
-        printf("Usage: %s <f_in> <f_out> <s>\n", argv[0]);
-        return 1;
-    }
-    f_in = argv[1];
-    f_out = argv[2];
-    s = argv[3];
-    t = clock();
-    ret = task9(f_in, f_out, s, &res);
-    t = (clock() - t) / CLOCKS_PER_SEC;
-    switch (ret) {
-    case SUCCESS:
-        printf("%s : Task = %d Result = %d Elapsed = %.2f\n", argv[0], task, res, t);
-        break;
-    case ERROR_OPEN:
-        printf("Can not open %s\n", f_out);
-        return 1;
-    case ERROR_READ:
-        printf("Can not read %s\n", f_out);
-        return 2;
-    case ERROR_PATTERN:
-        printf("Error in pattern %s\n", s);
-        return 3;
-    }
-    return 0;
-}
diff --git a/2025.02.14/io_status.h b/2025.02.14/io_status.h
deleted file mode 100644
index dbdaf41..0000000
--- a/2025.02.14/io_status.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#ifndef IO_STATUS_H
-#define IO_STATUS_H
-
-#define LEN 1234
-
-typedef enum io_status_ {
-    SUCCESS,
-    ERROR_OPEN,
-    ERROR_READ,
-    ERROR_PATTERN,
-} io_status;
-
-#endif
diff --git a/2025.02.14/solve.c b/2025.02.14/solve.c
deleted file mode 100644
index eafa00d..0000000
--- a/2025.02.14/solve.c
+++ /dev/null
@@ -1,929 +0,0 @@
-#include "solve.h"
-
-/* ======================================= */
-/* ========== TASK 1 (Задание 1) ========= */
-/* ======================================= */
-
-io_status t1_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    size_t i;
-    int j;
-    for (i = 0, j = 0; i < len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = 0;
-                s2[j++] = s[++i];
-            }
-        }
-        else if ((s[i] == '^') && (i == 0))
-        {
-            s1[j] = '1';
-            s2[j++] = s[++i];
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t1_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach = t1_process_string(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                /* Исправленная проверка на '\n': */
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-    return SUCCESS;
-}
-
-bool t1_process_string(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    if (len_buf < len_s) return false;
-
-    if (s1[0] == '1')
-    {
-        size_t i;
-        for (i = 0; i < len_s; ++i)
-        {
-            if (buf[i] != s2[i]) return false;
-        }
-    }
-    else
-    {
-        char* s_pointer = strstr(buf, s2);
-        if (!s_pointer) return false;
-    }
-
-    return true;
-}
-
-/* ======================================= */
-/* ========== TASK 2 (Задание 2) ========= */
-/* ======================================= */
-
-io_status t2_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    size_t i;
-    int j;
-    for (i = 0, j = 0; i < len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = 0;
-                s2[j++] = s[++i];
-            }
-        }
-        else if ((s[i] == '$') && (i + 1 == len_s))
-        {
-            if (j != 0)
-            {
-                s1[j - 1] = '1';
-            }
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t2_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            /* Исправленная проверка на '\n' + уменьшение len_buf: */
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-
-            is_approach = t2_process_string(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                /* Здесь снова, если вдруг ещё раз проверяется: */
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-    return SUCCESS;
-}
-
-bool t2_process_string(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    if (len_buf < len_s) return false;
-
-    if (s1[len_s - 1] == '1')
-    {
-        size_t i;
-        /* Проверка с конца строки */
-        for (i = len_buf - 1; i > len_buf - len_s - 1; --i)
-        {
-            if (buf[i] != s2[i - (len_buf - len_s)]) return false;
-        }
-    }
-    else
-    {
-        char* s_pointer = strstr(buf, s2);
-        if (!s_pointer) return false;
-    }
-
-    return true;
-}
-
-/* ======================================= */
-/* ========== TASK 3 (Задание 3) ========= */
-/* ======================================= */
-
-io_status t3_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    size_t i;
-    int j;
-    for (i = 0, j = 0; i < len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == len_s) return ERROR_PATTERN;
-            else if ((i == 0) && (s[i + 1] == '<'))
-            {
-                s1[j] = '1';
-                i++;
-            }
-            else
-            {
-                if (s1[j] != '1') s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else
-        {
-            if (s1[j] != '1') s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t3_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, const char* t, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach = t3_process_string(buf, s1, s2, t, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-    return SUCCESS;
-}
-
-bool t3_process_string(const char* buf, const char* s1, const char* s2, const char* t,
-                       const size_t len_s, const size_t len_buf)
-{
-    if (len_buf < len_s) return false;
-    else
-    {
-        if (s1[0] == '1')
-        {
-            int last_space = -1, i;
-            size_t per_sim = 0; // Percent of similarity
-            for (i = 0; i < (int)len_buf; ++i)
-            {
-                if (t3_is_space(buf[i], t))
-                {
-                    last_space = i;
-                    per_sim = 0;
-                }
-                else
-                {
-                    if (buf[i] == s2[per_sim])
-                    {
-                        if ((i == last_space + 1) || (per_sim))
-                        {
-                            if (++per_sim == len_s)
-                            {
-                                return true;
-                            }
-                        }
-                    }
-                    else
-                    {
-                        per_sim = 0;
-                    }
-                }
-            }
-
-            return false;
-        }
-        else
-        {
-            if (strstr(buf, s2)) return true;
-            else return false;
-        }
-    }
-}
-
-bool t3_is_space(char symbol, const char* t)
-{
-    int i;
-    for (i = 0; t[i] != '\0'; ++i)
-    {
-        if (t[i] == symbol) return true;
-    }
-
-    return false;
-}
-
-/* ======================================= */
-/* ========== TASK 4 (Задание 4) ========= */
-/* ======================================= */
-
-io_status t4_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    size_t i;
-    int j;
-    for (i = 0, j = 0; i < len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == len_s) return ERROR_PATTERN;
-            else if ((i == len_s - 2) && (s[i + 1] == '>'))
-            {
-                if (j > 0)
-                {
-                    s1[j++ - 1] = '1';
-                }
-                else
-                {
-                    s1[j++] = '1';
-                }
-            }
-            else
-            {
-                s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t4_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, const char* t, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-            is_approach = t4_process_string(buf, s1, s2, t, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                /* Проверка повторно (если была) */
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-
-    return SUCCESS;
-}
-
-bool t4_process_string(const char* buf, const char* s1, const char* s2, const char* t,
-                       const size_t len_s, const size_t len_buf)
-{
-    if (len_buf < len_s) return false;
-    else
-    {
-        if (s1[len_s - 1] == '1')
-        {
-            size_t i, last_space = len_buf, per_sim = len_s - 1; // Percent of similarity
-            /* Обратный цикл, используя size_t */
-            for (i = len_buf - 1; i < i + 2; --i)
-            {
-                if (t3_is_space(buf[i], t)) // используем t3_is_space, чтобы логику не менять
-                {
-                    last_space = i;
-                    per_sim = len_s - 1;
-                }
-                else
-                {
-                    if (buf[i] == s2[per_sim])
-                    {
-                        if ((i == last_space - 1) || ((per_sim + 1) < len_s))
-                        {
-                            if (per_sim-- == 0)
-                            {
-                                return true;
-                            }
-                        }
-                    }
-                    else
-                    {
-                        per_sim = len_s - 1;
-                    }
-                }
-            }
-
-            return false;
-        }
-        else
-        {
-            if (strstr(buf, s2)) return true;
-            else return false;
-        }
-    }
-}
-
-/* ======================================= */
-/* ========== TASK 6 (Задание 6) ========= */
-/* ======================================= */
-
-io_status t6_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    size_t i;
-    int j;
-    for (i = 0, j = 0; i < len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else if (s[i] == '.')
-        {
-            s1[j] = '1';
-            s2[j++] = '.';
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t6_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-            is_approach = t6_process_string(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                /* Повторная проверка на всякий случай */
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-
-    return SUCCESS;
-}
-
-bool t6_process_string(const char* buf, const char* s1, const char* s2, const size_t len_s,
-                       const size_t len_buf)
-{
-    if (len_buf < len_s) return false;
-    if (s1[0] == '1' || buf[0] == s2[0])
-    {
-        int j;
-        for (j = 1; j < (int)len_s; ++j)
-        {
-            if ((buf[j] != s2[j]) && (s1[j] == '0'))
-            {
-                break;
-            }
-        }
-
-        if (j == (int)len_s && j == (int)len_buf) return true;
-    }
-
-    return false;
-}
-
-/* ======================================= */
-/* ========== TASK 7 (Задание 7) ========= */
-/* ======================================= */
-
-io_status t7_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    int i;
-    int j;
-    for (i = 0, j = 0; i < (int)len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == (int)len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else if ((s[i] == '?') && (j != 0))
-        {
-            s1[j - 1] = '1';
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t7_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-            is_approach = t7_start(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-
-    return SUCCESS;
-}
-
-bool t7_start(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    bool is_approach = false;
-    size_t char_s = sizeof(char);
-    if (len_s == 0)
-    {
-        if (len_buf == 0) return true;
-        return false;
-    }
-    else if (len_buf == 0) return false;
-
-    if (buf[0] == s2[0])
-    {
-        is_approach = t7_start(buf + char_s, s1 + char_s, s2 + char_s, len_s - 1, len_buf - 1);
-        if (is_approach) return true;
-    }
-    if (s1[0] == '1')
-    {
-        is_approach = t7_start(buf, s1 + char_s, s2 + char_s, len_s - 1, len_buf);
-        if (is_approach) return true;
-    }
-
-    return false;
-}
-
-/* ======================================= */
-/* ========== TASK 8 (Задание 8) ========= */
-/* ======================================= */
-
-io_status t8_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    int i, j;
-    for (i = 0, j = 0; i < (int)len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == (int)len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else if ((s[i] == '+') && (j != 0))
-        {
-            s1[j - 1] = '1';
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t8_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-            is_approach = t8_start(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-
-    return SUCCESS;
-}
-
-bool t8_start(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    size_t char_s = sizeof(char);
-    if (buf[0] == s2[0])
-    {
-        if (s1[0] == '1')
-        {
-            if (t8_recursion(buf + char_s, s1, s2, len_s, len_buf - 1)) return true;
-        }
-        if (len_buf == 0 && len_s == 0) return true;
-        if (t8_recursion(buf + char_s, s1 + char_s, s2 + char_s, len_s - 1, len_buf - 1)) return true;
-    }
-
-    return false;
-}
-
-bool t8_recursion(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    size_t char_s = sizeof(char);
-    if (len_s == 0) return true;
-    else if (len_buf == 0) return false;
-    else
-    {
-        int i;
-        for (i = 0; i < (int)len_buf; ++i)
-        {
-            if (buf[i] == s2[i])
-            {
-                if (s1[i] == '1')
-                {
-                    if (t8_recursion(buf + (i + 1) * char_s, s1 + i * char_s, s2 + i * char_s, len_s - i,
-                                     len_buf - (i + 1)))
-                        return true;
-                }
-                if ((i + 1) == (int)len_s)
-                {
-                    if (i + 1 == (int)len_buf) return true;
-                    return false;
-                }
-            }
-            else
-            {
-                return false;
-            }
-        }
-
-        return false;
-    }
-}
-
-/* ======================================= */
-/* ========== TASK 9 (Задание 9) ========= */
-/* ======================================= */
-
-io_status t9_process_s(const char* s, char* s1, char* s2, const size_t len_s)
-{
-    int i, j;
-    for (i = 0, j = 0; i < (int)len_s; ++i)
-    {
-        if (s[i] == '\\')
-        {
-            if (i + 1 == (int)len_s) return ERROR_PATTERN;
-            else
-            {
-                s1[j] = '0';
-                s2[j++] = s[++i];
-            }
-        }
-        else if ((s[i] == '*') && (j != 0))
-        {
-            s1[j - 1] = '1';
-        }
-        else
-        {
-            s1[j] = '0';
-            s2[j++] = s[i];
-        }
-    }
-
-    s2[j] = '\0';
-
-    return SUCCESS;
-}
-
-io_status t9_process_file(const char* f_in, const char* f_out, const char* s1, const char* s2, int* r)
-{
-    FILE* fp = fopen(f_in, "r");
-    if (!fp) return ERROR_OPEN;
-    else
-    {
-        char buf[LEN] = {0};
-        size_t len_s = strlen(s2);
-        FILE* fw = fopen(f_out, "w");
-        int i;
-
-        if (!fw)
-        {
-            fclose(fp);
-            return ERROR_OPEN;
-        }
-        for (i = 0; fgets(buf, sizeof(buf), fp);)
-        {
-            size_t len_buf = strlen(buf);
-            bool is_approach;
-            if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                buf[--len_buf] = '\0';
-            is_approach = t9_start(buf, s1, s2, len_s, len_buf);
-
-            if (is_approach)
-            {
-                i++;
-                if (len_buf > 0 && buf[len_buf - 1] == '\n')
-                    buf[len_buf - 1] = '\0';
-                fprintf(fw, "%s\n", buf);
-            }
-        }
-
-        *r = i;
-        fclose(fw);
-    }
-
-    fclose(fp);
-
-    return SUCCESS;
-}
-
-bool t9_start(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    size_t char_s = sizeof(char);
-    if (buf[0] == s2[0])
-    {
-        if (s1[0] == '1')
-        {
-            if (t9_recursion(buf + char_s, s1, s2, len_s, len_buf - 1)) return true;
-            else if (t9_recursion(buf, s1 + char_s, s2 + char_s, len_s - 1, len_buf)) return true;
-        }
-        if (len_buf == 0 && len_s == 0) return true;
-        return t9_recursion(buf + char_s, s1 + char_s, s2 + char_s, len_s - 1, len_buf - 1);
-    }
-    if (s1[0] == '1') return t9_recursion(buf, s1 + char_s, s2 + char_s, len_s - 1, len_buf);
-
-    return false;
-}
-
-bool t9_recursion(const char* buf, const char* s1, const char* s2, const size_t len_s, const size_t len_buf)
-{
-    size_t char_s = sizeof(char);
-    if (len_s == 0)
-    {
-        if (len_buf == 0) return true;
-        return false;
-    }
-    else if (len_buf == 0) return false;
-    else
-    {
-        int i;
-        for (i = 0; i < (int)len_buf; ++i)
-        {
-            if (buf[i] == s2[i])
-            {
-                if (s1[i] == '1')
-                {
-                    if (t9_recursion(buf + (i + 1) * char_s, s1 + i * char_s, s2 + i * char_s,
-                                     len_s - i, len_buf - (i + 1)))
-                        return true;
-                    else if (t9_recursion(buf + i * char_s, s1 + (i + 1) * char_s, s2 + (i + 1) * char_s,
-                                          len_s - (i + 1), len_buf - i))
-                        return true;
-                }
-            }
-            else
-            {
-                if (s1[i] == '1')
-                {
-                    /* Здесь два return подряд в оригинале - оставляем как есть */
-                    return (t9_recursion(buf + i * char_s, s1 + (i + 1) * char_s, s2 + (i + 1) * char_s,
-                                         len_s - (i + 1), len_buf - i));
-                    return true;
-                }
-                return false;
-            }
-        }
-
-        if (i == (int)len_s) return true;
-        return false;
-    }
-}
diff --git a/2025.02.14/solve.h b/2025.02.14/solve.h
deleted file mode 100644
index 14afcef..0000000
--- a/2025.02.14/solve.h
+++ /dev/null
@@ -1,54 +0,0 @@
-#ifndef SOLVE_H
-#define SOLVE_H
-
-#include "io_status.h"
-#include <stdio.h>
-#include <stdbool.h>
-#include <string.h>
-
-/* ========== TASK 1 (Исходный код из первого задания) ========== */
-io_status t1_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t1_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t1_process_string(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 2 ========== */
-io_status t2_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t2_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t2_process_string(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 3 ========== */
-io_status t3_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t3_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, const char *t, int *r);
-bool      t3_process_string(const char *buf, const char *s1, const char *s2, const char *t,
-                              const size_t len_s, const size_t len_buf);
-bool      t3_is_space(char symbol, const char *t);
-
-/* ========== TASK 4 ========== */
-io_status t4_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t4_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, const char *t, int *r);
-bool      t4_process_string(const char *buf, const char *s1, const char *s2, const char *t,
-                              const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 6 ========== */
-io_status t6_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t6_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t6_process_string(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 7 ========== */
-io_status t7_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t7_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t7_start(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 8 ========== */
-io_status t8_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t8_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t8_start(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-bool      t8_recursion(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-/* ========== TASK 9 ========== */
-io_status t9_process_s(const char *s, char *s1, char *s2, const size_t len_s);
-io_status t9_process_file(const char *f_in, const char *f_out, const char *s1, const char *s2, int *r);
-bool      t9_start(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-bool      t9_recursion(const char *buf, const char *s1, const char *s2, const size_t len_s, const size_t len_buf);
-
-#endif // SOLVE_H
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@@ -1,4 +1,2 @@
-2 -1 0 0
--1 2 -1 0
-0 -1 2 -1
-0 0 -1 2
+1.0001 0
+0 1