// nemes 2023 bajital.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
#include<vector>
#include <iostream>

using namespace std;
int main()
{
	cin.sync_with_stdio(false);
	cin.tie(nullptr);
	
	int folyadekok, x;
	cin >> folyadekok >> x;
	int fozesre = 0, aktual;
	int korok = 0;
	for (size_t i = 0; i < folyadekok; i++)
	{
		cin >> aktual;
		fozesre += aktual % x;
		aktual -= aktual % x;
		korok += aktual / x;
		

	}
	while (fozesre < korok) {
		fozesre += x;
		korok = korok - 1;
	}
	cout << korok << '\n';
}