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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int n, i, top, s;
  5. 	char t[10001];
  6.  
  7. 	scanf("%d", &n);
  8. 	while(n--){
  9. 		top = i = s = 0;
  10. 		scanf("%s", &t);
  11. 		while(t[i]){
  12. 			if(t[i]==')'){
  13. 				if(t[top-1]=='('){
  14. 					top--;
  15. 				} else {
  16. 					printf("NO\n");
  17. 					s = -1;
  18. 					break;
  19. 				}
  20. 			} else if(t[i]=='}'){
  21. 				if(t[top-1]=='{'){
  22. 					top--;
  23. 				} else {
  24. 					printf("NO\n");
  25. 					s = -1;
  26. 					break;
  27. 				}
  28. 			} else if(t[i]==']'){
  29. 				if(t[top-1]=='['){
  30. 					top--;
  31. 				} else {
  32. 					printf("NO\n");
  33. 					s = -1;
  34. 					break;
  35. 				}
  36. 			} else {
  37. 				t[top++] = t[i];
  38. 			}
  39. 			i++;
  40. 		}
  41. 		if(s==0){
  42. 			if(top==0) printf("YES\n");
  43. 			else printf("NO\n");
  44. 		}
  45. 	}
  46. 	return 0;
  47. }
Success #stdin #stdout 0s 2252KB
comments (?)
stdin 
4
()()
({[}])
({}[(){}])
({}[]
stdout 
YES
NO
YES
NO
https://ideone.com/ua5QYh
BRACKETS2
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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