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  1. #include<stdio.h>
  2.  
  3. char S[12121212];
  4. int main() {
  5. 	int t, tc;scanf("%d",&t);
  6. 	for (int tc = 0; tc < t; tc++) {
  7. 		int n; scanf("%d",&n);
  8. 		scanf("%s",S);
  9. 		int p = 0;
  10. 		for (int i = 0; S[i]; i++) {
  11. 			if(S[0] != S[i]) {
  12. 				p = i;
  13. 				break;
  14. 			}
  15. 		}
  16. 		if (p == 0) {
  17. 			puts("0");
  18. 			continue;
  19. 		}
  20. 		for(int i = p; S[i]; i++) {
  21. 			printf("%d", (S[i-p]-'0')^(S[i]-'0'));
  22. 		}
  23. 		puts("");
  24. 	}
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin 
4
3
010
5
10101
5
00100
5
11111
stdout 
11
1111
101
0
https://ideone.com/Jnycmb
language:
C++14 (gcc 8.3)
created:
24 days ago
visibility:
public

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