#include <iostream>
#include <vector>
using namespace std;

int main(){
  int n;
  cin >> n;
  vector<int> p(n);
  for(int i = 0; i < n; i++) cin >> p[i];

  string ans = "";

  auto s = [&](){
    ans += 'S';
    swap(p[0], p[1]);
  };
  auto r = [&](){
    ans += 'R';
    for(int i = 0; i < n - 1; i++) swap(p[i], p[i + 1]);
  };

  while(p[n - 1] != n - 1) r();

  for(int i = n - 2; i >= 0; i--){
    if(p[i] == i) continue;
    while(p[0] != i) r();
    while(p[1] != i + 1){
      s();
      r();
    }
    while(p[i] != i) r();
  }

  cout << ans << endl;
}