func_code_string: #include <bits/stdc++.h>   int main() {     long long int n, x, y, i, j, k = 0, s;     scanf( %lld %lld %lld , &n, &x, &y);     long long int X[n], Y[n];     for (i = 0; i < n; i++) {       scanf( %lld %lld , &X[i], &Y[i]);       for (j = i - 1; j >= 0; j--) {         s = x * Y[i] + X[i] * Y[j] + X[j] * y - X[i] * y - X[j] * Y[i] - x * Y[j];         if (s == 0) {           break;         }       }       if (j < 0) {         k++;       }     }     printf( %lld n , k);     return 0;   }   