#include<iostream>
#include<vector>
#include<queue>
using namespace std;
int N,A[2<<17],B[2<<17];
vector<pair<int,bool> >E;
bool vis[2<<17];
main()
{
	cin>>N;
	for(int i=0;i<N;i++)cin>>A[i];
	for(int i=0;i<N;i++)cin>>B[i];
	queue<int>P;
	for(int i=0;i<N;i++)
	{
		if(A[i]<=B[i])
		{
			if(i+1==N||A[i+1]>B[i])P.push(i),vis[i]=true;
		}
		else
		{
			if(i==0||A[i-1]<B[i])P.push(i),vis[i]=true;
		}
	}
	while(!P.empty())
	{
		int id=P.front();P.pop();
		for(;A[id]>B[id];A[id]--)E.push_back(make_pair(id+1,false));
		for(;A[id]<B[id];A[id]++)E.push_back(make_pair(id+1,true));
		for(int t=id-1;t<=id+1;t+=2)if(0<=t&&t<N&&!vis[t])
		{
			if(A[t]<=B[t])
			{
				if(t+1==N||A[t+1]>B[t])P.push(t),vis[t]=true;
			}
			else
			{
				if(t==0||A[t-1]<B[t])P.push(t),vis[t]=true;
			}
		}
	}
	cout<<E.size()<<endl;
	for(pair<int,bool>p:E)cout<<p.first<<" "<<(p.second?'R':'L')<<"\n";
}