#include <bits/stdc++.h>
using namespace std;
// #include <atcoder/all>
// using namespace atcoder;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i <= n; ++i)
#define reps(i, s, e) for (ll i = s; i <= e; ++i)
#define rrep(i, n) for (ll i = n - 1; 0 <= i; --i)
#define all(v) v.begin(), v.end()
#define endl "\n"
template <class T>
bool chmax(T& a, const T& b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
bool chmin(T& a, const T& b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}
using ll = long long;
using ld = long double;
using cp = complex<ld>;
using pa = pair<ll, ll>;
using tup = tuple<ll, ll, ll>;
using vp = vector<pair<ll, ll> >;
using vtup = vector<tuple<ll, ll, ll> >;
using st = string;
using vs = vector<string>;
using vc = vector<char>;
using vvi = vector<vector<ll> >;
using vvc = vector<vector<char> >;
using vi = vector<ll>;
const ll MOD1 = 1000000007;
const ll MOD2 = 998244353;
const ll INF = (1LL << 60);

void init() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL), cout.tie(NULL);
  cout << fixed << setprecision(15);
}

int main() {
  init();

  ll n, d;
  cin >> n >> d;
  vi a(n - 1);
  rep(i, n - 1) { cin >> a[i]; }
  ll add = 0;
  cout << 0 << " ";
  rep(i, n - 1) {
    ll cur = 0;
    if (a[i] < (i + 1) * d) {
      cur = (i + 1) * d;
      add += cur - a[i];
    } else {
      cur = a[i] + add;
    }
    cout << cur;
    cout << ((i != n - 2) ? " " : endl);
  }
}