diff --git a/2025.03.07/1Ex/Makefile b/2025.03.07/1Ex/Makefile
new file mode 100644
index 0000000..25150b6
--- /dev/null
+++ b/2025.03.07/1Ex/Makefile
@@ -0,0 +1,19 @@
+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
+
+a01.exe: main.o array_io.o solve.o init_f.o
+	gcc main.o solve.o array_io.o init_f.o -o a01.exe -lssp
+
+main.o: main.c
+	gcc $(CFLAGS) -c main.c
+
+solve.o: solve.c
+	gcc $(FLAGS) -c solve.c
+
+array_io.o: array_io.c
+	gcc $(CFLAGS) -c array_io.c
+
+init_f.o: init_f.c
+	gcc $(CFLAGS) -c init_f.c
+
+clean:
+	del *.o *.exe
diff --git a/2025.03.07/1Ex/array_io.c b/2025.03.07/1Ex/array_io.c
new file mode 100644
index 0000000..df278b5
--- /dev/null
+++ b/2025.03.07/1Ex/array_io.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include "array_io.h"
+
+io_status read_sq_matrix(double *a, int n, const char *name)
+{
+	int i, j;
+	FILE *fp;
+	if (!(fp = fopen(name, "r"))) return ERROR_OPEN;
+	for (i = 0; i < n; i++)
+		for (j = 0; j < n; j++)
+			if (fscanf(fp, "%lf", a + i * n + j) != 1) 
+				{fclose(fp); return ERROR_READ;}
+	fclose(fp);
+	return SUCCESS;
+}
+
+void print_sq_matrix(const double *a, int n, int p)
+{
+	int np = (n > p ? p : n);
+	int i, j;
+
+	for (i = 0; i < np; i++)
+	{
+		for (j = 0; j < np; j++)
+			printf(" %10.3e", a[i * n + j]);
+		printf("\n");
+	}
+}
+
+void init_sq_matrix(double *a, int n, int k)
+{
+	double (*q)(int, int, int, int);
+	double (*f[])(int, int, int, int) = {f1, f2, f3, f4};
+	int i, j;
+	q = f[k-1];
+	for (i = 0; i < n; i++)
+		for (j = 0; j < n; j++)
+			a[i * n + j] = q(n, n, i+1, j+1);
+}
diff --git a/2025.03.07/1Ex/array_io.h b/2025.03.07/1Ex/array_io.h
new file mode 100644
index 0000000..8a106c3
--- /dev/null
+++ b/2025.03.07/1Ex/array_io.h
@@ -0,0 +1,11 @@
+#ifndef ARRAY_IO_H
+#define ARRAY_IO_H
+
+#include "io_status.h"
+#include "init_f.h"
+
+io_status read_sq_matrix(double *a, int n, const char *name);
+void print_sq_matrix(const double *a, int n, int p);
+void init_sq_matrix(double *a, int n, int k);
+
+#endif
diff --git a/2025.03.07/1Ex/init_f.c b/2025.03.07/1Ex/init_f.c
new file mode 100644
index 0000000..cf325c3
--- /dev/null
+++ b/2025.03.07/1Ex/init_f.c
@@ -0,0 +1,30 @@
+#include "init_f.h"
+#include <math.h>
+
+#define MAX(n, m) (n < m ? m : n)
+
+double f1(int n, int m, int i, int j)
+{
+	return MAX(n, m) - MAX(i, j) + 1;
+}
+
+double f2(int n, int m, int i, int j)
+{
+	(void)n;
+	(void)m;
+	return MAX(i, j);
+}
+
+double f3(int n, int m, int i, int j)
+{
+	(void)n;
+	(void)m;
+	return abs(i - j);
+}
+
+double f4(int n, int m, int i, int j)
+{
+	(void)n;
+	(void)m;
+	return 1./(i+j-1);
+}
diff --git a/2025.03.07/1Ex/init_f.h b/2025.03.07/1Ex/init_f.h
new file mode 100644
index 0000000..691aace
--- /dev/null
+++ b/2025.03.07/1Ex/init_f.h
@@ -0,0 +1,9 @@
+#ifndef INIT_F_H
+#define INIT_F_H
+
+double f1(int n, int m, int i, int j);
+double f2(int n, int m, int i, int j);
+double f3(int n, int m, int i, int j);
+double f4(int n, int m, int i, int j);
+
+#endif
diff --git a/2025.03.07/1Ex/io_status.h b/2025.03.07/1Ex/io_status.h
new file mode 100644
index 0000000..a51376d
--- /dev/null
+++ b/2025.03.07/1Ex/io_status.h
@@ -0,0 +1,14 @@
+#ifndef IO_STATUS_H
+#define IO_STATUS_H
+
+#define LEN 1234
+
+typedef enum _io_status
+{
+	SUCCESS,
+	ERROR_OPEN,
+	ERROR_READ,
+	ERROR_MEM
+} io_status;
+
+#endif
diff --git a/2025.03.07/1Ex/main.c b/2025.03.07/1Ex/main.c
new file mode 100644
index 0000000..12ed985
--- /dev/null
+++ b/2025.03.07/1Ex/main.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include "array_io.h"
+#include "io_status.h"
+#include "solve.h"
+
+/* ./a.out n p k [filename] */
+int main(int argc, char *argv[])
+{
+	double t, *a;
+	int n, p, k, res, task = 1;
+	char *name = 0;
+	
+	if (!((argc == 4 || argc == 5) && 
+				sscanf(argv[1], "%d", &n) == 1 && 
+				sscanf(argv[2], "%d", &p) == 1 &&
+				sscanf(argv[3], "%d", &k) == 1 &&
+				k >= 0 && k <= 4 && (!(k == 0 && argc != 5))))
+	{
+		printf("Usage: %s n p k [filename]\n", argv[0]);
+		return 0;
+	}
+	if (argc == 5) name = argv[4];
+
+	a = (double *)malloc(n * n * sizeof(double));
+	if (!a)
+	{
+		printf("Not enough memory\n");
+		return 2;
+	}
+
+	if (name)
+	{ /* из файла */
+		io_status ret;
+		ret = read_sq_matrix(a, n, name);
+		do {
+			switch (ret)
+			{
+				case SUCCESS:
+					continue;
+				case ERROR_OPEN:
+					printf("Cannot open %s\n", name);
+					break;
+				case ERROR_READ:
+					printf("Cannot read %s\n", name);
+			}
+			free(a);
+			return 3;
+		} while (0);
+	} else init_sq_matrix(a, n, k);
+
+	printf("initial matrix:\n");
+	print_sq_matrix(a, n, p);
+
+	t =  clock();
+	res = t1_solve(a, n);
+	t = (clock() - t) / CLOCKS_PER_SEC;
+
+	printf("Result = %d\n", res);
+	printf("%s : Task = %d Elapsed = %.2f\n", argv[0], task, t);
+	free(a);
+	return 0;
+}
diff --git a/2025.03.07/1Ex/matrix.txt b/2025.03.07/1Ex/matrix.txt
new file mode 100644
index 0000000..3ff0f03
--- /dev/null
+++ b/2025.03.07/1Ex/matrix.txt
@@ -0,0 +1,4 @@
+ 1.000e+00  2.000e+00  3.000e+00  4.000e+00
+ 2.000e+00  3.000e+00  4.000e+00  5.000e+00
+ 3.000e+00  4.000e+00  5.000e+00  6.000e+00
+ 4.000e+00  5.000e+00  6.000e+00  7.000e+00
diff --git a/2025.03.07/1Ex/solve.c b/2025.03.07/1Ex/solve.c
new file mode 100644
index 0000000..e1b2fae
--- /dev/null
+++ b/2025.03.07/1Ex/solve.c
@@ -0,0 +1,14 @@
+#include "solve.h"
+#include "math.h"
+
+#define eps 1e-6
+
+int t1_solve(double *a, int n)
+{
+	int i, j;
+	for (i = 0; i < n; i++)
+		for (j = 0; j < n; j++)
+			if (i != j)
+				if (fabs(a[i * n + j] - a[j * n + i]) > eps) return 0;
+	return n;
+}
diff --git a/2025.03.07/1Ex/solve.h b/2025.03.07/1Ex/solve.h
new file mode 100644
index 0000000..c6b0387
--- /dev/null
+++ b/2025.03.07/1Ex/solve.h
@@ -0,0 +1,6 @@
+#ifndef SOLVE_H
+#define SOLVE_H
+
+int t1_solve(double *a, int n);
+
+#endif
diff --git a/2025.03.07/1Ex/t.txt b/2025.03.07/1Ex/t.txt
new file mode 100644
index 0000000..bbba707
--- /dev/null
+++ b/2025.03.07/1Ex/t.txt
@@ -0,0 +1,4 @@
+1 2 3 4
+1 2 3 4
+1 2 3 4
+1 2 3 4
diff --git a/2025.03.07/1Ex/test_cases.json b/2025.03.07/1Ex/test_cases.json
new file mode 100644
index 0000000..b00e259
--- /dev/null
+++ b/2025.03.07/1Ex/test_cases.json
@@ -0,0 +1,46 @@
+{
+  "exe": "a01.exe",
+  "filename": "matrix.txt",
+  "tests": [
+    {
+      "name": "File Matrix Test",
+      "k": 0,
+      "matrix": "1 2 3 4\n1 2 3 4\n1 2 3 4\n1 2 3 4",
+      "expected_res": 0
+    },
+	{
+      "name": "File Symmetric Matrix Test",
+      "k": 0,
+      "matrix": "1 2 3 4\n2 3 4 5\n3 4 5 6\n4 5 6 7",
+      "expected_res": 4
+    },
+    {
+      "name": "Generated Matrix (k=1)",
+      "k": 1,
+      "n": 3,
+      "p": 3,
+      "expected_res": 3
+    },
+	{
+      "name": "Generated Matrix (k=2)",
+      "k": 2,
+      "n": 3,
+      "p": 3,
+      "expected_res": 3
+    },
+    {
+      "name": "Generated Matrix (k=3)",
+      "k": 3,
+      "n": 3,
+      "p": 3,
+      "expected_res": 3
+    },
+	{
+      "name": "Generated Matrix (k=4)",
+      "k": 4,
+      "n": 3,
+      "p": 3,
+      "expected_res": 3
+    }
+  ]
+}
diff --git a/2025.03.07/1Ex/test_runner.py b/2025.03.07/1Ex/test_runner.py
new file mode 100644
index 0000000..000dbf9
--- /dev/null
+++ b/2025.03.07/1Ex/test_runner.py
@@ -0,0 +1,182 @@
+import json
+import subprocess
+import os
+import time
+import platform
+import re
+import signal
+from colorama import Fore, Style, init
+
+# Enable color support in Windows
+init(autoreset=True)
+
+def color_text(text, color):
+    """Returns colored text"""
+    return color + text + Style.RESET_ALL
+
+def cleanup_and_exit():
+    """Handles cleanup on Ctrl+C or forced exit"""
+    print(color_text("\n[ABORT] Operation interrupted. Cleaning up...", Fore.RED))
+    run_command("make clean")
+    exit(1)
+
+# Register Ctrl+C handler
+signal.signal(signal.SIGINT, lambda sig, frame: cleanup_and_exit())
+
+class TestCase:
+    """Represents a single test case"""
+    def __init__(self, k, matrix=None, n=None, p=None, expected_res=0, debug=False, name=None):
+        self.k = k
+        self.matrix = matrix
+        self.n = n
+        self.p = p
+        self.expected_res = expected_res
+        self.debug = debug
+        self.name = name if name else f"Test k={k}, n={n if n else 'auto'}, p={p if p else 'auto'}"
+
+        # Compute `n` if missing and `k == 0`
+        if self.k == 0 and not self.n and self.matrix:
+            self.n = len(self.matrix.strip().split("\n"))
+
+        # Compute `p`
+        self.p = self.p if self.p else self.n
+
+    def validate_inputs(self):
+        """Ensures input values are valid"""
+        if self.k < 0 or (self.k == 0 and not self.matrix):
+            print(color_text(f"[ERROR] Invalid test parameters: {self.name}", Fore.RED))
+            return False
+        return True
+
+class TestSuite:
+    """Handles loading and running test cases"""
+    def __init__(self, config_file):
+        self.config = self.load_config(config_file)
+        self.exe = self.config["exe"]
+        self.filename = self.config["filename"]
+        self.tests = [TestCase(**test) for test in self.config["tests"]]
+
+    @staticmethod
+    def load_config(filename):
+        """Loads test cases from JSON"""
+        with open(filename, "r", encoding="utf-8") as f:
+            return json.load(f)
+
+def run_command(cmd, exit_on_error=False):
+    """Runs a shell command and handles errors"""
+    try:
+        result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
+        return result
+    except subprocess.CalledProcessError as e:
+        print(color_text(f"[ERROR] Command failed: {cmd}", Fore.RED))
+        print(e.stderr)
+        if exit_on_error:
+            exit(1)
+        return None
+
+def wait_for_executable(exe):
+    """Waits for the executable file to appear after compilation"""
+    print(color_text(f"[WAIT] Waiting for {exe} to be compiled...", Fore.YELLOW))
+    while not os.path.exists(exe):
+        time.sleep(0.1)  # Reduce CPU usage
+    print(color_text(f"[READY] {exe} compiled successfully.", Fore.GREEN))
+
+def format_matrix(matrix):
+    """Formats a matrix to match `printf("%10.3e")` output"""
+    formatted = []
+    for row in matrix.strip().split("\n"):
+        formatted.append(" ".join(f"{float(num):10.3e}" for num in row.split()))
+    return "\n".join(formatted)
+
+def parse_matrix_output(output):
+    """Extracts and formats matrix from program output"""
+    parts = output.split("initial matrix:\n")[1].split("Result")
+    if len(parts) > 1:
+        matrix = "\n".join(parts[0].strip().split("\n"))  # Remove last line with "Result = ..."
+        return format_matrix(matrix)
+    return ""
+
+def check_result(output, expected_res):
+    """Checks if Result matches expected value"""
+    match = re.search(r"Result\s*=\s*(-?\d+)", output)
+    if match:
+        result_value = int(match.group(1))
+        if result_value != expected_res:
+            print(color_text(f"[FAIL] Test failed: Result = {result_value} (expected {expected_res})", Fore.RED))
+            return False
+    return True
+
+def generate_expected_matrix(n, p, k):
+    """Generates expected matrix based on k"""
+    def f(k, i, j):
+        if k == 1:
+            return max(n, n) - max(i, j) + 1
+        elif k == 2:
+            return max(i, j)
+        elif k == 3:
+            return abs(i - j)
+        elif k == 4:
+            return 1.0 / (i + j - 1) if (i + j - 1) != 0 else 0
+        return 0
+
+    matrix = []
+    for i in range(min(n, p)):
+        row = [f(k, i + 1, j + 1) for j in range(min(n, p))]
+        matrix.append(" ".join(f"{num:10.3e}" for num in row))
+    return "\n".join(matrix)
+
+def run_test(test_suite, test):
+    """Runs the program and checks its result"""
+    if not test.validate_inputs():
+        return
+
+    exe, filename = test_suite.exe, test_suite.filename
+
+    # If matrix is given, write it to the file
+    if test.k == 0 and test.matrix:
+        with open(filename, "w", encoding="utf-8") as f:
+            f.write(format_matrix(test.matrix.strip()) + "\n")
+
+    cmd = [exe, str(test.n), str(test.p), str(test.k)]
+    if test.k == 0:
+        cmd.append(filename)
+
+    # Run the program
+    result = run_command(cmd)
+
+    # Extract and format output matrix
+    matrix_output = parse_matrix_output(result.stdout) if result else None
+
+    # Generate expected matrix
+    expected_matrix = format_matrix(test.matrix) if test.k == 0 else generate_expected_matrix(test.n, test.p, test.k)
+
+    if matrix_output.strip() != expected_matrix.strip():
+        print(color_text(f"[FAIL] Test '{test.name}' matrix mismatch.", Fore.RED))
+        print(f"Expected:\n{expected_matrix}")
+        print(f"Got:\n{matrix_output}")
+        return
+
+    # Check Result
+    if not check_result(result.stdout, test.expected_res):
+        return
+
+    print(color_text(f"[PASS] Test '{test.name}' passed.", Fore.GREEN))
+
+def main():
+    print(color_text("[CLEAN] Cleaning project...", Fore.CYAN))
+    run_command("make clean", exit_on_error=True)
+
+    print(color_text("[BUILD] Compiling project...", Fore.CYAN))
+    run_command("make", exit_on_error=True)
+
+    test_suite = TestSuite("test_cases.json")
+    wait_for_executable(test_suite.exe)
+
+    for test in test_suite.tests:
+        run_test(test_suite, test)
+
+    print(color_text("[CLEAN] Final cleanup...", Fore.CYAN))
+    run_command("make clean")
+
+if __name__ == "__main__":
+    main()
diff --git a/2025.03.07/Example/Makefile b/2025.03.07/Example/Makefile
new file mode 100644
index 0000000..f31a9c0
--- /dev/null
+++ b/2025.03.07/Example/Makefile
@@ -0,0 +1,19 @@
+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
+
+a08.exe: main.o array.o solve.o sort.o
+	gcc main.o solve.o array.o sort.o -o a08.exe -lssp
+
+main.o: main.c
+	gcc $(CFLAGS) -c main.c
+
+solve.o: solve.c
+	gcc $(FLAGS) -c solve.c
+
+array.o: array.c
+	gcc $(CFLAGS) -c array.c
+
+sort.o: sort.c
+	gcc $(CFLAGS) -c sort.c
+
+clean:
+	del *.o *.exe
diff --git a/2025.03.07/Example/array_io.h b/2025.03.07/Example/array_io.h
new file mode 100644
index 0000000..48705f4
--- /dev/null
+++ b/2025.03.07/Example/array_io.h
@@ -0,0 +1,8 @@
+#ifndef ARRAY_IO_H
+#define ARRAY_IO_H
+
+io_status read_matrix(double *a, int n, int m, const char *name);
+void print_matrix(const double *a, int n, int m, int p);
+void init_matrix(double *a, int n, int m);
+
+#endif
diff --git a/2025.03.07/Tasks04.pdf b/2025.03.07/Tasks04.pdf
new file mode 100644
index 0000000..4744cdc
Binary files /dev/null and b/2025.03.07/Tasks04.pdf differ