#include<bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector<int> A = {720, 360, 180, 30, 6, 1};
  vector<char> C = {'C', 'M', 'S', 'R', 'o', '.'};
  int M = 6;
  string ans;
  for (int i = 0; i < M; i++) {
    while (N >= A[i]) {
      ans.push_back(C[i]);
      N -= A[i];
    }
  }
  cout << ans << endl;
}