Codeforce A. Collecting Beats is Fun

1. #include< bits/stdc++.h >
2. using namespace std;
3. int main(){
4. int k;
5. char a;
6. cin >> k;
7. int ar[10] = {0};
8. for(int i = 0; i < 16; i++){
9. cin >> a;
10. ar[a]++;
11. }
12. for(int i = 1; i < 10; i++)
13. if(ar[i+'0'] > 2*k) return cout << "NO\n", 0;
14. cout << "YES\n";
15. return 0;
16. }