View Code of Problem 3686

#include<stdio.h>
#include<string.h>
#define Max 1000000000
int main()
{
	int t,i,n,x,a[Max],b[Max];
	scanf("%d",&t);
	while(t--)
	{
		memset(b,0,sizeof(b));
		scanf("%d%d",&n,&x);
		for(i=0;i<n;i++)
		{
			scanf("%d",&a[i]);
			b[a[i]]++;
		}
		for(i=0;i<n;i++)
		{
			if(x>a[i])
			{
				if(b[x-a[i]]!=0&&x!=2*a[i])
				{
					printf("YES\n");
					break;
				}
				else if(b[x-a[i]]>1)
				{
					printf("YES\n");
					break;
				}
			}
		}
		if(i==n)
			printf("NO\n");
	}

		return 0;
}