#include<bits/stdc++.h>
using namespace std;
int n,k,a[1001],sum = 0,maxx = 0,minn = 9999;
int main(){
	cin >> n >> k;
	for(int i = 1;i <= n;i++){
		cin >> a[i];
	}
	sort(a + 1,a + n + 1);
	for(int i = n;i >= 1;i--){
		maxx = max(maxx,a[i]);
		minn = min(minn,a[i]);
		if(maxx - minn <= k){
			sum += a[i]; 
		}
	}
	cout << sum;
	return 0;
}