n = int(input())

s = ""

while n > 0:
    if n >= 720:
        s += "C"
        n -= 720
    elif n >= 360:
        s += "M"
        n -= 360
    elif n >= 180:
        s += "S"
        n -= 180
    elif n >= 30:
        s += "R"
        n -= 30
    elif n >= 6:
        s += "o"
        n -= 6
    elif n >= 1:
        s += "."
        n -= 1

print(s)