defmodule Main do
  def input, do: IO.read(:line) |> String.trim
  def ii, do: input() |> String.to_integer
  def li, do: input() |> String.split |> Enum.map(&String.to_integer/1)
  def yn(b), do: IO.puts(if b, do: "Yes", else: "No")

  def main do
    [s, t] = input() |> String.split

    s = String.to_charlist(s)
    t = String.to_charlist(t)
    yn(f(s, t))
  end

  def f(s, t) when length(s) < length(t), do: false
  def f(s, t) do
    ns = length(s)
    nt = length(t)
    Enum.zip(Enum.drop(s, ns-nt), t)
    |> Enum.all?(fn {a, b} -> a >= b end)
  end
end