#include<bits/stdc++.h>
using namespace std;


int main()
{
    int m,n,newm,newn,leftm,rightm,leftn,rightn,i,j,k,a,b,c,d;
    while(cin>>m>>n)
    {
        if(m==1 && n==1)
            break;
        string s="";
        leftm=0,rightm=1,leftn=1,rightn=0;
        newm=(leftm+rightm);
        newn=(leftn+rightn);
        while(true)
        {
            if(newm==m && newn==n)
                break;
            if(newm*n<newn*m)
            {
                s.push_back('R');
                leftm=newm,leftn=newn;
                newm=(rightm+leftm);
                newn=(leftn+rightn);
            }
            else
            {
                s.push_back('L');
                rightm=newm,rightn=newn;
                newm=(leftm+rightm);
                newn=(leftn+rightn);
            }

        }
        cout<<s<<endl;
    }
    return 0;
}