fork download
copy 
  1. #include<stdio.h>
  2. main()
  3. {
  4. 	int t;
  5. 	scanf("%d",&t);
  6. 	while(t--)
  7. 	{
  8. 		long long unsigned int s=0,n,y,i;
  9. 		scanf("%lld",&n);
  10. 		for(i=0;i<n;i++)
  11. 		{
  12.  
  13. 			scanf("%lld",&y);
  14. 			if(i%2)
  15. 				s -= y;
  16. 			else
  17. 				s += y;
  18.  
  19. 		}
  20. 		if(s)
  21. 		{
  22. 			printf("NO\n");
  23. 		}
  24. 		else
  25. 			printf("YES\n");
  26. 	}
  27. 	return 0;
  28. }
  29.  
Success #stdin #stdout 0s 4444KB
comments (?)
stdin
copy 
1
4
1 6 4 2
stdout
copy 
NO
https://ideone.com/RG1hTu
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!