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package main

import "fmt"
import "strconv"

func main() {
	nums := [6]int {720, 360, 180, 30, 6, 1}

	m := make(map[int]string)
	m[720] = "C"
	m[360] = "M"
	m[180] = "S"
	m[30] = "R"
	m[6] = "o"
	m[1] = "."

	var Nstr string
   	fmt.Scan(&Nstr)
	N, _ := strconv.Atoi(Nstr)
	
	result := ""
	cursor := 0
	for N > 0 {
		if N < nums[cursor] {
			cursor++
			continue
		}
		
		N -= nums[cursor]
		result += m[nums[cursor]]
	}
	
	fmt.Println(result)
}