#include <bits/stdc++.h>
using namespace std;

int main(){
    int N, K;
    cin >> N >> K;
    vector<int> A(N-1);
    for (int& x : A) cin >> x;
    A.insert(A.begin(), 0);
    for (int i = 1; i <= N; i++) A[i] = max(A[i-1]+K, A[i]);
    for (int x : A) cout << x << ' ';
    cout << endl;
}