fn main() {
	input!{
        n: usize,
    }

    let mut henkan = Vec::new();
    henkan.push((720, 'C'));
    henkan.push((360, 'M'));
    henkan.push((180, 'S'));
    henkan.push((30, 'R'));
    henkan.push((6, 'o'));
    henkan.push((1, '.'));

    let mut n = n;
    for i in 0..6 {
        while n >= henkan[i].0 {
            print!("{}", henkan[i].1);
            n -= henkan[i].0;
        }
    }
    println!();
}

// const MOD17: usize = 1000000007;
// const MOD93: usize = 998244353;
// const INF: usize = 1 << 60;
// let dx = vec![!0, 0, 1, 0]; // 上左下右
// let dy = vec![0, !0, 0, 1]; // 上左下右
// let d = vec!{(!0, 0), (0, !0), (1, 0), (0, 1)}; // 上左下右

#[allow(unused)]
use proconio::{input, marker::Chars, marker::Usize1};

#[allow(unused)]
use std::{
	mem::swap,
	cmp::min, cmp::max,
	cmp::Reverse,
	collections::HashSet, collections::BTreeSet,
	collections::HashMap, collections::BTreeMap,
	collections::BinaryHeap,
	collections::VecDeque,
	iter::FromIterator,
};