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

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	string ans;
	vector<int> b = {720, 360, 180, 30, 6, 1};
	string t = "CMSRo.";
	for(int i = 0; i < 6; i++){
		int v = n / b[i];
		n %= b[i];
		if(v == 0) continue;
		ans += string(v, t[i]);
	}
	cout << ans << '\n';
}