// UUID: 7a590be3-d9dc-4157-b778-1a838bd85978
#include <bits/stdc++.h>
using namespace std;

int main() {
	int n, x;
    cin >> n >> x;

    vector <int> itemek(n);
    for(int i = 0; i < n; i++)
        cin >> itemek[i];
    
    int maradek = 0;
    for(int i = 0; i < n; i++)
        maradek += itemek[i] % x;

    int egesz = 0;
    for(int i = 0; i < n; i++)
        egesz += itemek[i] / x;
    
    if(egesz <= maradek)
        cout << egesz;
    else
        while(egesz <= maradek)
            {
                egesz--;
                maradek += x;
            }
}