func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(false);     long long int x1, y1;     cin >> x1 >> y1;     long long int x2, y2;     cin >> x2 >> y2;     int n;     cin >> n;     int ans = 0;     for (int i = 0; n > i; i++) {       long long int a, b, c;       cin >> a >> b >> c;       long long int res1 = a * x1 + b * y1 + c;       long long int res2 = a * x2 + b * y2 + c;       if ((res1 < 0 && res2 > 0) || (res1 > 0 && res2 < 0)) {         ans++;       }     }     cout << ans;   }   