N = int(input())

res = ""
while N:
  if N >= 720:
    N -= 720
    res += "C"
  elif N >= 360:
    N -= 360
    res += "M"
  elif N >= 180:
    N -= 180
    res += "S"
  elif N >= 30:
    N -= 30
    res += "R"
  elif N >= 6:
    N -= 6
    res += "o"
  else:
    N -= 1
    res += "."

print(res)