79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#define eps 1.e-6
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double * getArray(FILE * file);
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int level(double * arr1, int len1, double * arr2, int len2);
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int contains(double * arr, int len, double num);
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double * getArray(FILE * file) {
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int size = 2, i = 0;
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double * arr = (double *)malloc(size * sizeof(double));
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double current;
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if (arr == NULL) return NULL;
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while (fscanf(file, "%lf", ¤t) == 1) {
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if (size == (i + 1)) arr = (double *)realloc(arr, (size *= 2) * sizeof(double));
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arr[++i] = current;
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}
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arr = (double *)realloc(arr, (i + 1) * sizeof(double));
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arr[0] = i;
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if (i == 0) return NULL;
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return arr;
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}
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int level(double * arr1, int len1, double * arr2, int len2) {
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double start = 0, end = 0;
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int count = 0, len = len1 < len2 ? len2 : len1;
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for (int i = 0; i < len; ++i) {
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if (start - arr1[i % len2] > eps || (i == 0)) start = arr2[i % len2];
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if (arr1[i % len1] - end > eps || i == 0) end = arr1[i % len1];
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}
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for (int i = 0; i < len; ++i) {
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if (i < len1) if (arr1[i] - start > -eps && end - arr1[i] > -eps && (contains(arr2, len2, arr1[i]) == 0)) ++count;
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if (i < len2) if (arr2[i] - start > -eps && end - arr2[i] > -eps) ++count;
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}
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return count;
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}
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int contains(double * arr, int len, double num) {
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for (int i = 0; i < len; ++i) if (fabs(arr[i] - num) < eps) return 1;
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return 0;
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}
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int main(void) {
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FILE * file = fopen("ina.txt", "r");
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double *arr1, *arr2;
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if (file == NULL) return -1;
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arr1 = getArray(file);
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if (fclose(file) != 0) return -1;
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if (arr1 == NULL) return -1;
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file = fopen("inb.txt", "r");
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if (file == NULL) return -1;
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arr2 = getArray(file);
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if (fclose(file) != 0) return -1;
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if (arr1 == NULL) return -1;
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file = fopen("output.txt", "w");
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if (file == NULL) return -1;
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if (fprintf(file, "%d", level(&arr1[1], (int)arr1[0], &arr2[1], (int)arr2[0])) <= 0) {fclose(file); return -1;}
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if (fclose(file) != 0) return -1;
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free(arr1);
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free(arr2);
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return 0;
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}
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