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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. #define endl "\n"
  4. #define F first
  5. #define S second
  6. #define loop(a,n) for(int i=a; i<=n ; i++)
  7. #define TIME (1.0 * clock() / CLOCKS_PER_SEC)
  8. #define NAME ""
  9. using namespace std;
  10.  
  11. int q, n;
  12.  
  13. int op (string a, int b) {
  14.     int res = 0;
  15.     for (char d: a)
  16.         res = (res * 10 + (d - '0')) % b;
  17.     return res;
  18. }
  19.  
  20. void solve(int n){
  21.     string s = "1";
  22.     while (true) {
  23.         if (op(s, n) == 0) {
  24.             cout << s.size() << endl;
  25.             return;
  26.         }
  27.         s += '1';
  28.     }
  29. }
  30.  
  31. void nhap(){    
  32.     cin >> q;
  33.     while(q--) {
  34.         cin >> n;
  35.         solve(n);
  36.     }
  37. }
  38. int main(){
  39.     ios_base::sync_with_stdio(0);
  40.     cin.tie(0);cout.tie(0);
  41.     nhap();
  42.     return 0;
  43. }
  44.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/QV9B9o
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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