View Code of Problem 133

#include<stdio.h>
void main() {
	int t;
	scanf("%d",&t);
	while(t--) {
		int n,x,i,j,temp,low,high,flag=0;
		scanf("%d %d",&n,&x);
		int a[n];
		for(i=0; i<n; i++) {
			scanf("%d",&a[i]);
		}
		
		for(i=1; i<n; i++) {
			temp=a[i];
			for(j=i-1; a[j]>temp&&j>=0; j--) {
				a[j+1]=a[j];
			}
			a[j+1]=temp;
		}

		low=0;
		high=n-1;
		while(low<high){
			if(a[low]+a[high]>x) high--;
			else if(a[low]+a[high]<x) low++;
			else {
				flag=1;
				break;
			}
		}
		if(flag==1){
			printf("YES\n");
		}else{
			printf("NO\n");
		}
	}
}