open System
type Sol() =
    member this.Solve() = 
        let f s =
            match s with
            | "I"   -> 1
            | "II"  -> 2
            | "III" -> 3
            | "IIII"  -> 4
            | "V"   -> 5
            | "VI"  -> 6
            | "VII" -> 7
            | "VIII" -> 8
            | "IX"  -> 9
            | "X"   -> 10
            | "XI"  -> 11
            | "XII" -> 12
            | _ -> 0
        let invf = [| "XII";"I";"II";"III";"IIII";"V";"VI";"VII";"VIII";"IX";"X";"XI" |]
        let ans = stdin.ReadLine().Split(' ') |> (fun ss -> ( (f ss.[0]) + (int ss.[1]) + 12*10000 ) % 12)
        Console.WriteLine(invf.[ans])
            

let mySol = new Sol()
mySol.Solve()