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