fun readInt () =
    valOf (TextIO.scanStream (Int.scan StringCvt.DEC) TextIO.stdIn)
              

val () =
    let
        val a = readInt ()
        val b = readInt ()
        val c = readInt ()

        val ans = if a + b = c then "Correct"
                  else "Incorrect"
    in
        print (ans ^ "\n")
    end