#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; } |
Double click to view unformatted code.