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  1. #include <stdio.h>
  2. #include <stdbool.h>
  3.  
  4. int main(void) {
  5. 	int t;
  6. 	scanf("%d",&t);
  7. 	for(int i=1;i<=t;i++){
  8. 		int a,b;
  9. 		scanf("%d%d",&a,&b);
  10. 		int m=(2*a-b)/3;
  11. 		int n=(2*b-a)/3;
  12. 		bool print=(a==(2*m+n)&&b==(2*n+m)&&m>=0&&n>=0);
  13. 		(print==true)? printf("YES\n"):printf("NO\n");
  14. 	}
  15. 	return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
copy 
3
2 1
2 2
3 3
stdout
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YES
NO
YES
https://ideone.com/PbZzyd
Coin piles（列方程式 by me）
language:
C (gcc 8.3)
created:
2 hours ago
visibility:
public

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