#include <bits/stdc++.h>

#define speed cin.tie(0); ios::sync_with_stdio(0)
#define cinv(v) for (auto& e : v) cin >> e;
#define all(v) v.begin(), v.end()
#define has(s, e) s.count(e)

using namespace std;
using ll = long long;
using point = array<int, 2>;

int main() {
    speed;

    int N, x;
    cin >> N >> x;
    vector<int> v(N);
    cinv(v);
    
    int remS = 0, divS = 0;

    for (int b : v) {
        remS += b % x;
        divS += b / x;
    }

    while (divS > remS) {
        divS--;
        remS += x;
    }

    cout << divS;
}