// UUID: 46f3b50e-3b63-44a5-ac7f-844c7907cdb5
#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(maradek < egesz)
    {
        while(egesz <= maradek)
        {
            egesz--;
            maradek += x;
        }
    }
    cout << egesz;
}