def Main():
    n=int(input())
    C=n//720
    n%=720
    M=n//360
    n%=360
    S=n//180
    n%=180
    R=n//30
    n%=30
    o=n//6
    n%=6

    print("C"*C+"M"*M+"S"*S+"R"*R+"o"*o+"."*n)
        


Main()