#include <stdio.h>

// int tmp, var = 0; を先に宣言する
#define rd_int(var, tmp)                                                                                               \
    for (;;) {                                                                                                         \
        tmp = getc_unlocked(stdin);                                                                                    \
        if (tmp < '0' || tmp > '9') break;                                                                             \
        var = var * 10 + tmp - '0';                                                                                    \
    }

// char buf[9]; int ptr = 0; を先に宣言する
#define wt_int(var, buf, ptr)                                                                                          \
    while (var) {                                                                                                      \
        buf[ptr++] = var % 10;                                                                                         \
        var /= 10;                                                                                                     \
    }                                                                                                                  \
    if (!ptr) buf[ptr++] = 0;                                                                                          \
    while (ptr--) putc_unlocked(buf[ptr] + '0', stdout);

int main() {
    int n = 0, d = 0, ac = 0, prev = 0, tmp, ptr = 0;
    char buf[9];

    rd_int(n, tmp);
    rd_int(d, tmp);

    wt_int(prev, buf, ptr);
    for (int i = 1; i < n; ++i) {
        putc_unlocked(' ', stdout);
        ptr = 0;
        prev += d;
        int a = 0;
        rd_int(a, tmp);
        ac += a;
        // printf("[%d %d %d]", a, ac, prev);
        if (ac > prev) prev = ac;
        tmp = prev;
        wt_int(tmp, buf, ptr);
        // printf("[%d %d %d]\n", a, ac, prev);
    }
    putc_unlocked('\n', stdout);
    return 0;
}