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