func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b;     cin >> a >> b;     int d = 0;     if (b % a != 0) {       cout <<  -1 ;       return 0;     }     int c = b / a;     if (c == 1) {       cout <<  0 ;       return 0;     }     while (c != 0) {       if (c % 2 == 0) {         c = c / 2;         d++;       } else         break;     }     while (c != 0) {       if (c % 3 == 0) {         c = c / 3;         d++;       } else         break;     }     if (c == 1)       cout << d;     else       cout <<  -1 ;     return 0;   }   