#include <bits/stdc++.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    vector<int> A = {720,360,180,30,6,1};
    vector<char> C = {'C','M','S','R','o','.'};

    int N; cin >> N;
    int idx = 0;
    for(auto a : A){
        int loop = N/a; N %= a;
        while(loop--) cout << C.at(idx);
        idx++;
    }
    cout << endl;
}