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  1. #include <iostream>
  2. #include <cstdio>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n, x, y, z, a=0, b=0, c=0;
  7. 	scanf("%d", &n);
  8. 	while(n--) {
  9. 		scanf("%d%d%d", &x, &y, &z);
  10. 		a+=x, b+=y, c+=z;
  11. 	}
  12. 	if(a==0 && b==0 && c==0) printf("YES");
  13. 	else printf("NO");
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3344KB
comments (?)
stdin
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3
3 -1 7
-5 2 -4
2 -1 -3
stdout
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YES
https://ideone.com/SBU0ba
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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