func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a1, a2, b1, b2, c1, c2;     while (scanf( %d%d%d%d%d%d , &a1, &b1, &c1, &a2, &b2, &c2) != EOF) {       if (a1 == 0 && b1 == 0 && c1 != 0) {         printf( 0 n );         continue;       }       if (a2 == 0 && b2 == 0 && c2 != 0) {         printf( 0 n );         continue;       }       if ((a1 == 0 && b1 == 0 && c1 == 0) || (a2 == 0 && b2 == 0 && c2 == 0)) {         printf( -1 n );         continue;       }       if (a1 == 0 && a2 == 0) {         if (c1 * b2 == c2 * b1) {           printf( -1 n );         } else {           printf( 0 n );         }         continue;       }       if (b1 == 0 && b2 == 0) {         if (c1 * a2 == c2 * a1) {           printf( -1 n );         } else {           printf( 0 n );         }         continue;       }       if (a1 == 0 && b1 != 0) {         printf( 1 n );         continue;       }       if (a1 != 0 && b1 == 0) {         printf( 1 n );         continue;       }       if (a2 == 0 && b2 != 0) {         printf( 1 n );         continue;       }       if (a2 != 0 && b2 == 0) {         printf( 1 n );         continue;       }       if (a1 * b2 == a2 * b1) {         if (fabs(c1 * 1.0 / b1 - c2 * 1.0 / b2) < 1e-8) {           printf( -1 n );         } else {           printf( 0 n );         }       } else {         printf( 1 n );       }     }     return 0;   }   