View Code of Problem 133

#include<stdio.h>
#include<string.h>
int a[100000],b[10000000];

int main()
{
	int t;
	int n,x;
	int i;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d%d",&n,&x);
		memset(b,0,sizeof(b));
		for(i=1;i<=n;i++)
		{
			scanf("%d",&a[i]);
			b[a[i]]=1;
		}
		
		for(i=1;i<=n;i++)
		{
			if(b[x-a[i]]!=0)
				break;
		}
		if(i==n+1)
			printf("NO\n");
		else 
			printf("YES\n");
	}
	
	
	
	
	
	return 0;
}