-- yukicoder My Practice
-- author: Leonardone @ NEETSDKASU

roman = ["I","II","III","IIII","V","VI","VII","VIII","IX","X","XI","XII"]

main = putStrLn . solve . words =<< getLine

solve [t, a] = ans where
    h = length $ takeWhile (/= t) roman
    x = (`mod` 12) $ h + 2400 + read a
    ans = roman !! x