func_code_string: #include <bits/stdc++.h>   using namespace std;   priority_queue<pair<long long int, int> > pq;   vector<pair<int, int> > vp;   map<long long int, int> mp, m;   const int N = 1e5 + 6;   long long int ans[N];   vector<int> v, v1;   set<long long int> s, s1;   int visit[N];   struct domingo {     int val, left, right;   } o[N];   bool used[102];   int main() {     int a, b, c, ct = 1;     cin >> a >> b >> c;     a = a % b;     a *= 10;     for (int i = 0; i < 1e5 + 5; i++) {       int x = a / b;       a %= b;       if (x == c) return cout << ct, 0;       a *= 10;       ct++;     }     cout << -1;   }   