func_code_string: #include <bits/stdc++.h>   using namespace std;   int a1, a2, b1, b2, c1, c2;   int main() {     cin >> a1 >> b1 >> c1 >> a2 >> b2 >> c2;     if (a1 == 0 && b1 == 0 && c1 != 0 || a2 == 0 && b2 == 0 && c2 != 0) {       cout <<  0 n ;       return 0;     }     int m1 = b1 * a2, m2 = b2 * a1;     if (m1 == m2)       if (c1 * b2 != c2 * b1 || a1 * c2 != a2 * c1)         cout <<  0 n ;       else         cout <<  -1 n ;     else       cout <<  1 n ;     return 0;   }   