#include <iostream>
#include <vector>

using namespace std;

int main() {
    int bajitalok_szama;
    int x;
    vector<int> bajitalok;

    cin >> bajitalok_szama;
    cin >> x;

    int temp;


    for (int i = 0; i < bajitalok_szama; i++) {
        cin >> temp;

        bajitalok.push_back(temp);
    }

    int megoldas = 0;

    // bajitalok[0]--;
    temp = 0;


    for (int i = 0; i < bajitalok_szama; i++) {
        bajitalok[i]--;
        for (int j = 0; j < bajitalok_szama; j++) {
            temp = 0;
            while (bajitalok[j]-x >= 0) {
                bajitalok[j]-=x;
                megoldas++;
                temp++;
            }
            bajitalok[j]+= temp*x;
        }


        bajitalok[i]++;
    }

    cout << megoldas+1;




    return 0;
}