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

fn main() {
    input! {
        mut n: usize,
    }
    let a = vec![720, 360, 180, 30, 6, 1];
    let b = vec!["C", "M", "S", "R", "o", "."];
    let mut output = String::new();
    for i in 0..6 {
        output += &b[i].repeat(n / a[i]);
        n %= a[i];
    }
    println!("{}", output)
}