import sys
from fractions import Fraction
input = sys.stdin.readline
def read_values(): return tuple(map(int, input().split()))
def read_list(): return list(read_values())

def main():
    n=int(input())
    s=[(720,'C'),(360,'M'),(180,'S'),(30,'R'),(6,'o'),(1,'.')]
    for c,v in s:
        while n >= c:
            print(v,end='')
            n -= c
    
if __name__ == "__main__":
    main()