S,t = input().split()
num = 0
ans = ""
if S == "IX":
    num = 9
else:
    for i in range(len(S)):
        if S[i] == "X":
            num += 10
        elif S[i] == "V":
            num += 5
        else:
            num += 1
num += int(t) % 12
if num == 9 or num == 21:
    ans = "IX"
else:
    if num >= 13:
        num -= 12
    while num > 0:
        if num >= 10:
            ans += "X"
            num -= 10
        elif num >= 5:
            ans += "V"
            num -= 5
        else:
            ans += "I"
            num -= 1
print(ans)