func, num_string = input().split()

one = ['I','X','C','M']
five = ['V','L','D']


dic = {'M':1000,'D':500,'C':100,'L':50,'X':10,'V':5,'I':1}

if(func=="int2roman"):
    num = int(num_string)
    ret = 'M'*(num//1000)
    for exp in range(2,-1,-1):
        digit = num // (10**exp) % 10
        if(digit ==4):
            ret+=one[exp]+five[exp]
        elif(digit==9):
            ret+=one[exp]+one[exp+1]
        else:
            ret+=five[exp]*(digit//5)+one[exp]*(digit%5)
    print(ret)
elif(func=="roman2int"):
    ret =0
    prev = 0
    for l in num_string:
        current = dic[l]
        if(prev*5==current or prev*10==current):
            ret+=current-prev
        else:
            ret+=prev
        prev = current
    ret+=prev
    print(ret)