def calc(input)
#   input.split(" ").map(&:to_i).then { |a, b, c|
#     a + b == c ? "Correct" : "Incorrect"
#   }
  case input.split(" ").map(&:to_i)
  in [a, b, c] if a + b == c
    "Correct"
  else
    "Incorrect"
  end
end

input = "4 1 5"
# input = gets
puts calc(input)