View Code of Problem 133

#include<stdio.h>
#include<string.h>
int a[10000000],b[10000000];
int main()
{
	int t,n,x,i;
	scanf("%d",&t);
	while(t--)
	{
		
		scanf("%d%d",&n,&x);
		for(i=1;i<=n;i++)
		{
			scanf("%d",&a[i]);
			b[a[i]]=i;
		}
		for(i=1;i<=n;i++)
		{
			if(b[x-a[i]]!=0)
			{
				printf("YES\n");
				break;
			}
		}
		if(i==n+1)	printf("NO\n");
	}
}