#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    int N,D; cin >> N >> D;
    vector<int> a = {0};
    rep(i,N-1) { int x; cin >> x; a.push_back(x); }
    rep(i,N-1) a[i + 1] += a[i];
    rep(i,N-1) a[i + 1] = max(a[i + 1], a[i] + D);
    rep(i,N) cout << a[i] << " "; cout << endl;
}