#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
using mint = modint998244353;
const int dx[4]={0,1,0,-1};
const int dy[4]={1,0,-1,0};

int n;
int main(){
    cin >> n;
    string ans;
    vector<pair<int,char>>num={{720,'C'},{360,'M'},{180,'S'},{30,'R'},{6,'o'},{1,'.'}};
    rep(i,6){
        while(n>=num[i].first){
            ans.push_back(num[i].second);
            n-=num[i].first;
        }
    }
    cout << ans << endl;
    return 0;
}