func_code_string: #include <bits/stdc++.h>   using namespace std;   int sgn(long long v) { return v > 0 ? 1 : 0; }   int main(void) {     long long p, q, r, s;     cin >> p >> q >> r >> s;     int n;     int res = 0;     cin >> n;     for (int i = 0; i < n; i++) {       int a, b, c;       cin >> a >> b >> c;       long long temp1 = (a * p + b * q + c);       long long temp2 = a * r + b * s + c;       res = (sgn(temp1) == sgn(temp2)) ? res : res + 1;     }     cout << res << endl;     return 0;   }   