#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int n, d;
  cin >> n >> d;
  vector<int> a(n, 0);
  rep(i, n - 1) cin >> a[i + 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] << " \n"[i == n - 1];
  return 0;
}