53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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int solution(int** dots, size_t dots_rows, size_t dots_cols) {
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int pair[3][4] = {{0, 1, 2, 3}, {0, 2, 1, 3}, {0, 3, 1, 2}};
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for(int i=0; i<3; i++) {
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double x1 = (double)dots[pair[i][0]][0], y1 = (double)dots[pair[i][0]][1];
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double x2 = (double)dots[pair[i][1]][0], y2 = (double)dots[pair[i][1]][1];
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double x3 = (double)dots[pair[i][2]][0], y3 = (double)dots[pair[i][2]][1];
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double x4 = (double)dots[pair[i][3]][0], y4 = (double)dots[pair[i][3]][1];
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double grad1 = (x2 - x1) / (y2 - y1);
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double grad2 = (x4 - x3) / (y4 - y3);
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if(grad1 == grad2) return 1;
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}
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return 0;
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}
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int main() {
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int** dots1 = (int**)malloc(sizeof(int*) * 4);
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int** dots2 = (int**)malloc(sizeof(int*) * 4);
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for(int i=0; i<4; i++) {
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dots1[i] = (int*)malloc(sizeof(int) * 2);
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dots2[i] = (int*)malloc(sizeof(int) * 2);
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}
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dots1[0][0] = 1; dots1[0][1] = 4;
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dots1[1][0] = 9; dots1[1][1] = 2;
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dots1[2][0] = 3; dots1[2][1] = 8;
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dots1[3][0] = 11; dots1[3][1] = 6;
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dots2[0][0] = 3; dots2[0][1] = 5;
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dots2[1][0] = 4; dots2[1][1] = 1;
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dots2[2][0] = 2; dots2[2][1] = 4;
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dots2[3][0] = 5; dots2[3][1] = 0;
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printf("%d %d\n",solution(dots1, 4, 2) ,solution(dots2, 4, 2));
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for(int i=0; i<4; i++) {
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free(dots1[i]);
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free(dots2[i]);
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}
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free(dots1); free(dots2);
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return 0;
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} |