#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,j,k,n,t;
	cin>>n;
	k=n*n;
	vector<int> adj[k+1];
	map<int, map<int, int> > mymap;
	int p=1;
	for(j=0;j<n;j++)
	{
		for(k=0;k<n;k++)
		{
		   if(j-2>=0&&k-1>=0)
		   {
		   	adj[p].push_back(p-2*n-1);
		   	mymap[p][p-2*n-1]=0;
		   }
		   if(j-2>=0&&k+1<n)
		   {
		   	adj[p].push_back(p-2*n+1);
		   	mymap[p][p-2*n+1]=1;
		   }
		   if(k+2<n)
		   {
		   	adj[p].push_back(p+2);
		   	mymap[p][p+2]=2;
		   }
		   if(j+2<n&&k+1<n)
		   {
		   	adj[p].push_back(p+2*n+1);
		   	mymap[p][p+2*n+1]=3;
		   }
		   if(j+2<n&&k-1>=0)
		   {
		   	adj[p].push_back(p+2*n-1);
		   	mymap[p][p+2*n-1]=4;
		   }
		   if(k-2>=0)
		   {
		   	adj[p].push_back(p-2);
		   	mymap[p][p-2]=5;
		   }	
		   p++;
		}
	}
	int x1,y1,x2,y2;
	cin>>x1>>y1>>x2>>y2;
	int p1=x1*n+y1+1;
	int p2=x2*n+y2+1;
	vector<int> par(n*n+1,0);
	queue<int> q;
	q.push(p1);
	vector<bool> vis(n*n+1,false);
	vector<int> length(n*n+1,0);
	vis[p1]=true;
	while(!q.empty())
	{
		int u1=q.front();
		q.pop();
			for(j=0;j<adj[u1].size();j++)
			{
				if(!vis[adj[u1][j]])
				{
					vis[adj[u1][j]]=true;
					par[adj[u1][j]]=u1;
					length[adj[u1][j]]=length[u1]+1;
					q.push(adj[u1][j]);
				}
			}
	}
	vector<int> v;
	k=p2;
	if(vis[p2]==false)
	cout<<"Impossible"<<endl;
	else
	{
		while(k!=p1)
	{
	//	cout<<" in the loop "<<endl;
		v.push_back(k);
		k=par[k];
	///	cout<<k<<" "<<par[k]<<" "<<mymap[k][par[k]]<<endl;
	}
	cout<<v.size()<<endl;
	if(mymap[p1][v[v.size()-1]]==0)
		cout<<"UL ";
	else	if(mymap[p1][v[v.size()-1]]==1)
		cout<<"UR ";
	else	if(mymap[p1][v[v.size()-1]]==2)
		cout<<"R ";
	else	if(mymap[p1][v[v.size()-1]]==3)
		cout<<"LR ";
	else	if(mymap[p1][v[v.size()-1]]==4)
		cout<<"LL ";
	else	if(mymap[p1][v[v.size()-1]]==5)
		cout<<"L ";
	for(j=v.size()-2;j>=0;j--)
	{
		if(mymap[v[j+1]][v[j]]==0)
		cout<<"UL ";
		if(mymap[v[j+1]][v[j]]==1)
		cout<<"UR ";
		if(mymap[v[j+1]][v[j]]==2)
		cout<<"R ";
		if(mymap[v[j+1]][v[j]]==3)
		cout<<"LR ";
		if(mymap[v[j+1]][v[j]]==4)
		cout<<"LL ";
		if(mymap[v[j+1]][v[j]]==5)
		cout<<"L ";
	}
	cout<<endl;
	}
	return 0;
}