#include<bits/stdc++.h>
using namespace std;
//#include<atcoder/all>
//using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
#define rep(i,n) for(int i=0;i<(n);++i)

int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n;
	cin>>n;
	int b[] = {720,360,180,30,6,1};
	string c = "CMSRo.";
	int m = 6;
	int idx=0;
	string ans = "";
	while(n){
		int am = n/b[idx];
		n%=b[idx];
		for(int i=0;i<am;++i) ans.push_back(c[idx]);
		idx++;
	}

	cout << ans << endl;
	
}