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  1. #define _CRT_SECURE_NO_WARNINGS
  2. #include<bits/stdc++.h>
  3. #include<unordered_map>
  4. using namespace std;
  5. typedef long long ll;
  6. typedef unsigned long long ull;
  7. typedef long double ld;
  8. typedef vector<int> vi;
  9. #define Fast ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  10. #define endl '\n'
  11. #define sz(s) (int)(s.size())
  12. #define all(s) s.begin(),s.end()
  13. #define allr(s) s.rbegin(),s.rend()
  14. #define RT(s) return cout<<s,0
  15. #define watch(x) cout << (#x) << " = " << x << endl
  16. void file() {
  17. #ifndef ONLINE_JUDGE
  18. 	freopen("in.txt", "r", stdin);freopen("out.txt", "w", stdout);
  19. #endif
  20. }
  21.  
  22. int main() {
  23. 	Fast;
  24. 	file();
  25. 	int x, mod;
  26. 	while (cin >> x >> mod) {
  27. 		map<int, bool> v;
  28. 		int s = 0;
  29. 		do {
  30. 			v[s] = true;
  31. 			s = (s + x) % mod;
  32. 		} while (!v[s]);
  33. 		cout << setw(10) << x;
  34. 		cout << setw(10) << mod;
  35. 		cout << "    ";
  36. 		cout << (sz(v) == mod ? "Good Choice" : "Bad Choice")
  37. 			<< endl << endl;
  38. 	}
  39. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/mvlbmm
uva 408
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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