// UUID: 4b419506-8644-42f3-833e-39f966f28f7f
#include <bits/stdc++.h>
using namespace std;

int main() {
    int n, x;
	cin >> n >> x;
	vector<int> a(n);
	int xliter = 0, maradek = 0;
	for (int i = 0; i < n; i++){
		cin >> a[i];
		xliter += a[i] / x;
		maradek += a[i] % x;
	}
	// cout << xliter << " " << maradek << "\n";
	while (maradek < xliter){
		xliter--;
		maradek += x;
	}
	cout << xliter;
}