fn main() {
	let mut s = String::new();
	std::io::stdin().read_line(&mut s).unwrap();
	let mut n: i32 = s.trim().parse().unwrap();
	for (c, s) in [
		('C', 720),
		('M', 360),
		('S', 180),
		('R', 30),
		('o', 6),
		('.', 1),
	] {
		while n >= s {
			print!("{}", c);
			n -= s;
		}
	}
}