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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin>>t;
  7. 	while(t--){
  8. 		int n;
  9. 		cin>>n;
  10. 		string s;
  11. 		cin>>s;
  12. 		int count=0,b=0;
  13. 		for(int i=0;i<n-1;i++){
  14. 			if(s[i]!=s[i+1]){
  15. 				count++;
  16. 			}
  17. 			else{
  18. 				b++;
  19. 			}
  20. 		}
  21. 		if(b>=1 && s[0]!=s[n-1]) cout<<count+2<<endl;
  22. 		else cout<<count+1<<endl;
  23. 	}
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin
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4
4
abcd
4
abbc
4
abba
6
abbccc
stdout
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4
4
3
4
https://ideone.com/qltK8x
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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