#include <bits/stdc++.h>

using ll = long long;

using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n,d;
    cin >> n >> d;

    int* pa = new int[n]{0};
    ll prev{ 0 }, cur{ 0 },l{ 0 };
    ostringstream ss;
    ss << "0 ";

    for (int i = 1; i < n; ++i)
    {
        int ai;
        cin >> ai;
        if (prev + d >= l + ai)
            cur = prev + d;
        else
            cur = l + ai;

        char c[32];
        sprintf(c, "%lld ", cur);
        ss << c;
        l += ai;
        prev = cur;
    }

    printf("%s", ss.str().replace(ss.str().length()-1,1,1,'\n').c_str());

    delete[] pa;

    return 0;
}