Submission #1518975

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n, m = gets.not_nil!.split.map(&.to_i)
a = Array.new(n) { gets.not_nil!.chars }
b = Array.new(m) { gets.not_nil!.chars }
ans = (0..(n - m)).any? do |r|
  (0..(n - m)).any? do |c|
    (0...m).all? do |i|
      (0...m).all? do |j|
        b[i][j] == a[r + i][c + j]
      end
    end
  end
end
puts ans ? "Yes" : "No"

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