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


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

        val x = a*b*2 + b*c*2 + c*a*2
        val y = a*b*c

        val ans = if x > y then 2
                  else 3
    in
        print (Int.toString ans ^ "\n")
    end