View Code of Problem 3686

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