func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, c, x, y, z;     cin >> a >> b >> c >> x >> y >> z;     int ans;     if ((a == 0 && b == 0 && c) || (x == 0 && y == 0 && z)) {       ans = 0;     } else if (a * y == b * x) {       if (a * z == c * x && b * z == c * y) {         ans = -1;       } else {         ans = 0;       }     } else {       ans = 1;     }     cout << ans;     return 0;   }   