use std::io;
use std::str;
use std::vec;

fn solve(scan: &mut UnsafeScanner<io::StdinLock>) {
    let sym = ['C', 'M', 'S', 'R', 'o', '.'];
    let val = [720, 360, 180, 30, 6, 1];

    let mut n = scan.token::<i32>();
    let mut ans: vec::Vec<char> = vec![];
    for (s, v) in std::iter::zip(sym, val) {
        while n >= v {
            ans.push(s);
            n -= v;
        }
    }

    for c in ans {
        print!("{c}");
    }
    println!();
}

fn main() {
    let mut scan = UnsafeScanner::new(io::stdin().lock());
    solve(&mut scan);
}

pub struct UnsafeScanner<R> {
    reader: R,
    buf_str: Vec<u8>,
    buf_iter: str::SplitAsciiWhitespace<'static>,
}

impl<R: io::BufRead> UnsafeScanner<R> {
    pub fn new(reader: R) -> Self {
        Self {
            reader,
            buf_str: vec![],
            buf_iter: "".split_ascii_whitespace(),
        }
    }

    pub fn token<T: str::FromStr>(&mut self) -> T {
        loop {
            if let Some(token) = self.buf_iter.next() {
                return token.parse().ok().expect("Failed parse");
            }
            self.buf_str.clear();
            self.reader
                .read_until(b'\n', &mut self.buf_str)
                .expect("Failed read");
            self.buf_iter = unsafe {
                let slice = str::from_utf8_unchecked(&self.buf_str);
                std::mem::transmute(slice.split_ascii_whitespace())
            }
        }
    }
}