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  1. #include<iostream>
  2. #include<vector>
  3. #include<stdio.h>
  4. using namespace std;
  5. int main()
  6. {
  7. 	vector<char> str;
  8. 	int T, i, c=0;
  9. 	char ch;
  10. 	scanf("%d", &T);
  11. 	getchar();
  12. 	while(T--)
  13. 	{
  14. 		while((ch=getchar_unlocked())!='\n')
  15. 			if(str.empty() || str[str.size()-1]!=ch)
  16. 				str.push_back(ch);
  17. 			else if(str[str.size()-1]==ch)
  18. 				str.pop_back();
  19. 		if(str.empty())
  20. 			c++;
  21. 		str.clear();
  22. 	}
  23. 	printf("%d\n", c);
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 3232KB
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https://ideone.com/aEFezx
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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