#include<bits/stdc++.h> using namespace std; int main() { int t; cin>>t; while (t--){ int n,x; cin>>n>>x; int m[100010]; for (int i = 0; i < n; ++i) { cin>>m[i]; } sort(m,m+n); int flag=0; int p=0,q=n-1; while(q>p) { if(m[p]+m[q]==x){ cout<<"YES"<<endl; flag=1; break; } else if(m[p]+m[q]>x){ q--; } else{ p++; } } if(flag==0) cout<<"NO"<<endl; } return 0; } |
Double click to view unformatted code.