#include <iostream>
#include <fstream>
#include <queue>
#include <math.h>
#include <vector>
using namespace std;
ifstream in("input.txt");
ofstream out("output.txt");


main(){
    int N;
    in>>N;
    vector <double> v;

    for(int i = 0; i < N; i++){
        int app;
        in>>app;
        v.push_back(app);
    }
    double a = 0, b = 0;
    bool somma;

    while(v.size() >= 1){

        a = v.front();
        somma = false;
        b = v[v.size()-1];

        for(int i = 1; i < v.size(); i++){
            if(somma){
                a = a + v[i]/pow(2,i);
            }
            else
                a = a - v[i]/pow(2,i);
            somma = !somma;
        }

        somma = false;
        int cont = 1;
        for(int i = v.size()-2; i >= 0; i--){
            if(somma){
                b = b + v[i]/pow(2,cont);
            }
            else
                b = b - v[i]/pow(2,cont);
            somma = !somma;
            cont++;
        }
        if(a > b){
            out<<"L";
            v.erase(v.begin());
        }
        else{
            out<<"R";
            v.erase(v.end()-1);
        }

    }
}