#include <vector>
#include <iostream>
#include <string>
#include <ostream>
#include <map>
#include <set>
#include <bitset>
#include <cmath>
#include <iomanip>
#include <algorithm>
#include <list>
#include <regex>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define reps(i, n) for (int i = 1; i < (n); i++)
using namespace std;

int main()
{
    int n;
    cin >> n;
    vector<int> a = {1, 6, 30, 180, 360, 720};
    vector<string> s = {".", "o", "R", "S", "M", "C"};

    while (n > 0)
    {

        rep(i, a.size())
        {
            if (i == a.size() - 1)
            {
                n -= a[i];
                cout << s[i];
            }
            else if (a[i] <= n && n < a[i + 1])
            {
                n -= a[i];
                cout << s[i];
                break;
            }
            
            if(n == 0)break;
        }
    }
}