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


val () =
    let
        val xp = readInt ()
        val yp = readInt ()
                         

        val dist = Real.trunc (Math.sqrt (Real.fromInt (xp * xp + yp * yp)))

        val ans = dist * 2 + 1
    in    
        print (Int.toString ans ^ "\n")
    end