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  1. #include <iostream>
  2. #include <bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	// your code goes here
  7. 	int n ; cin>>n;
  8. 	int k ; cin>>k;
  9. 	string s;
  10. 	cin>>s;
  11.  
  12.  
  13. 	int ans = 0 ; 
  14. 	for(int i = 0 ; i<n;i++){
  15. 		int count = 0 ; 
  16. 		for(int j = i ; j<n;j++){
  17. 			if(s[j]=='5'){
  18. 				count++;
  19.  
  20. 			}
  21. 			if(count==k) ans++;
  22. 		}
  23.  
  24. 	}
  25. 	cout<<ans;
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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5
2
52525
stdout
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4
https://ideone.com/j1fnf8
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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