fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	string s="xyxxy";
  7. 	int n=s.size();
  8. 	int d[n];
  9. 	for(int i=0;i<n;i++){
  10. 		if(s[i]=='x'){
  11. 			d[i]=-1;
  12. 		}
  13. 		else if(s[i]=='y'){
  14. 			d[i]=1;
  15. 		}
  16. 	}
  17.  
  18. 	unordered_map<int,int>count;
  19. 	count[0]=1;
  20. 	int f_count=0;
  21. 	int sum=0;
  22. 	for(int i=0;i<n;i++){
  23. 		sum+=d[i];
  24. 		if(count.find(sum)!=count.end()){
  25. 			f_count++;
  26. 		}
  27. 		count[sum]++;
  28. 	}
  29. 	cout<<f_count;
  30. 	return 0;
  31. }
Success #stdin #stdout 0.01s 5328KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
3
https://ideone.com/G4NNU9
language:
C++ (gcc 8.3)
created:
13 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!