#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#ifdef LOCAL
#include <algo/debug.h>
#else
#define debug(...) void(0)
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N; cin >> N;
    vector<int> pool{720, 360, 180, 30, 6, 1};
    vector<char> p{'C', 'M', 'S', 'R', 'o', '.'};
    string ans = "";
    for(int i = 0; i < int(pool.size()); i++) {
        int t = N / pool[i];
        ans += string(t, p[i]);
        N -= t * pool[i];
    }
    cout << ans << endl;
}