题目

#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,a[1000010],m,cnt;
signed main(){
	cin>>n>>m;
	for(int i=1;i<=n;i++) cin>>a[i];
	sort(a+1,a+n+1);
	for(int i=1;i<=n;i++){
		int L=1+i,R=n,mid;
		while(L<=R){
			mid=(L+R)/2;
			if(a[mid]-a[i]==m){
				cout<<a[mid]<<" "<<a[i]<<endl;
				break;
			}
			
		}
	}
	cout<<cnt;
	return 0;
}