// Source: https://usaco.guide/general/io

#include <bits/stdc++.h>
using namespace std;
#define int long long

signed main() {
	/*int n;cin>>n;int a=0,b=0,currl=0,maxl=0,db=0;
	for(int i=0;i<n;i++){
		cin>>a;
		if(a==b){
			maxl=max(maxl,currl+1);
			if(currl>0){
				db++;
			}
			currl=0;
		}
		else if(i==n-1){
			maxl=max(maxl,currl+1);
			db++;
		}
		else{
			currl++;
		}
		b=a;
	}
	cout<<db<<endl<<maxl<<endl;*/
	int n,x;cin>>n>>x;
	int g=0;
	vector<int> v;
	while(n--){
		int a;cin>>a;
		v.push_back(a%(x+1));
		a-=a%(x+1);
		g+=a/(x+1);	
	}int y=0,z=0,sum=0;
	for(int i : v){
		if(i==x){
			y++;
		}
		else{
			sum+=i;
			z++;
		}
	}
	if(y<=sum){
		cout<<g+y<<endl;
	}
	else {
		while(y<=sum){
			y--;
			sum+=x;
		}
		cout<<g+y<<endl;
	}
}