func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int A1, B1, C1, A2, B2, C2;     cin >> A1 >> B1 >> C1 >> A2 >> B2 >> C2;     if (A1 * B2 != A2 * B1)       cout << 1 << endl;     else {       if (A1 != 0 && A2 != 0 && A2 * C1 == A1 * C2)         cout << -1 << endl;       else if (A1 != 0 && A2 != 0)         cout << 0 << endl;       else if ((A1 == 0 && A2 != 0) || (A1 != 0 && A2 == 0)) {         if (B1 != 0 && B2 != 0)           cout << 1 << endl;         else if (B1 == 0 && C1 != 0 || B2 == 0 && C2 != 0)           cout << 0 << endl;         else           cout << -1 << endl;       } else if (A1 == 0 && A2 == 0) {         if (((B1 == 0 && C1 == 0) && (B2 == 0 && C2 == 0)) ||             ((B1 != 0 || B2 != 0) && B1 * C2 == B2 * C1))           cout << -1 << endl;         else           cout << 0 << endl;       }     }   }   