Submission #17275028

---

Source Code Expand

defmodule Main do
  def main do
    a = IO.read(:line) |> String.trim() |> String.to_integer()
    b = IO.read(:line) |> String.trim() |> String.to_integer()
    c = IO.read(:line) |> String.trim() |> String.to_integer()
    x = IO.read(:line) |> String.trim() |> String.to_integer()

    solve(a, b, c, x)
    |> IO.puts()
  end

  @doc ~S"""
  https://atcoder.jp/contests/abc087/tasks/abc087_b

  ## Examples

      iex> Abc087B.solve(2, 2, 2, 100)
      2
      iex> Abc087B.solve(5, 1, 0, 150)
      0
      iex> Abc087B.solve(30, 40, 50, 6000)
      213

  """
  def solve(a, b, c, x) do
    for(i <- 0..a, j <- 0..b, k <- 0..c, 500 * i + 100 * j + 50 * k == x, do: {i, j, k})
    |> Enum.count()
  end
end

Submission Info

Judge Result