#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
using namespace std;


int main()
{
    int n, d, diff = 0;
    cin >> n >> d;
    vector<int> v(n, 0);
    for (int i = 1; i < n; i++) cin >> v[i];
    for (int i = 1; i < n; i++){
        if (int t = v[i] - v[i-1] < d){
            diff += (d - t);
            v[i] += diff;
        } else {
            v[i] = v[i-1] + v[i];
            diff = 0;
        }
    }
    string delim = "";
    for (auto x : v){
        
        cout << delim << x;
        delim = " ";
    }
    cout << endl;
}