let [| n; d |] =
    stdin.ReadLine().Split()
    |> Array.map int

let a =
    stdin.ReadLine().Split()
    |> Array.map int

for i = 0 to n - 2 do
    if a.[i] < d then
        let x = d - a.[i]
        a.[i] <- a.[i] + x
        if i <> n - 2 then
            a.[i + 1] <- a.[i + 1] - x

a
|> Array.scan (+) 0
|> Array.map string
|> String.concat " "
|> printfn "%s"