using System;

class Program
{
    static void Main()
    {
        int N = int.Parse(Console.ReadLine());

        // 記号と価値（ボール個数）
        (char ch, int val)[] items = {
            ('C', 720),
            ('M', 360),
            ('S', 180),
            ('R', 30),
            ('o',   6),
            ('.',   1)
        };

        var result = new System.Text.StringBuilder();

        foreach (var (ch, val) in items)
        {
            int cnt = N / val;
            N %= val;
            for (int i = 0; i < cnt; i++) result.Append(ch);
        }

        Console.WriteLine(result.ToString());
    }
}