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

int main(){
    int n;
    cin>>n;
    vector<int> a(n),b(n);
    vector<pair<int,char>> ans;
    for(auto &&v:a)cin>>v;
    for(auto &&v:b)cin>>v;
    function<void(int)> dfs=[&](int i){
        while(b[i]>a[i]){
            if(i+1<n&&a[i]+1==a[i+1])dfs(i+1);
            a[i]++;
            ans.emplace_back(i+1,'R');
        }
        while(a[i]>b[i]){
            a[i]--;
            ans.emplace_back(i+1,'L');
        }
    };
    for(int i=0;i<n;i++)dfs(i);
    cout<<ans.size()<<'\n';
    for(int i=0;i<ans.size();i++)cout<<ans[i].first<<' '<<ans[i].second<<'\n';
}