use std::io;

fn main() {
    let mut input = String::new();
    io::stdin()
        .read_line(&mut input)
        .expect("Failed to read line");
    let n: i32 = input.trim().parse().expect("Please input a valid integer");

    let symbols = [
        (720, 'C'),
        (360, 'M'),
        (180, 'S'),
        (30, 'R'),
        (6, 'o'),
        (1, '.'),
    ];
    let mut remaining = n;
    let mut result = String::new();

    for &(value, symbol) in &symbols {
        while remaining >= value {
            result.push(symbol);
            remaining -= value;
        }
    }

    println!("{}", result);
}