#include <bits/stdc++.h>
#define ll long long
#define inf 100000000
using namespace std;
int n,is,ie,js,je,**dist;

void fun(int x,int y){
	if(x==is && y==js)	return;
	if(x-2>=0 && y-1>=0 && dist[x-2][y-1]>dist[x][y]+1){
		dist[x-2][y-1]=dist[x][y]+1;	fun(x-2,y-1);
	}
	if(x-2>=0 && y+1<n && dist[x-2][y+1]>dist[x][y]+1){
		dist[x-2][y+1]=dist[x][y]+1;	fun(x-2,y+1);
	}
	if(x+2<n && y-1>=0 && dist[x+2][y-1]>dist[x][y]+1){
		dist[x+2][y-1]=dist[x][y]+1;	fun(x+2,y-1);
	}
	if(x+2<n && y+1<n && dist[x+2][y+1]>dist[x][y]+1){
		dist[x+2][y+1]=dist[x][y]+1;	fun(x+2,y+1);
	}
	if(x>=0 && y-2>=0 && dist[x][y-2]>dist[x][y]+1){
		dist[x][y-2]=dist[x][y]+1;	fun(x,y-2);
	}
	if(x>=0 && y+2<n && dist[x][y+2]>dist[x][y]+1){
		dist[x][y+2]=dist[x][y]+1;	fun(x,y+2);
	}
}

void printer(int x,int y){
	if(x==ie && y==je)	return;
	int mini=inf;
	if(x-2>=0 && y-1>=0)	mini=min(mini,dist[x-2][y-1]);
	if(x-2>=0 && y+1<n)	mini=min(mini,dist[x-2][y+1]);
	if(x+2<n && y-1>=0)	mini=min(mini,dist[x+2][y-1]);
	if(x+2<n && y+1<n)	mini=min(mini,dist[x+2][y+1]);
	if(x>=0 && y-2>=0)	mini=min(mini,dist[x][y-2]);
	if(x>=0 && y+2<n)	mini=min(mini,dist[x][y+2]);

	if(mini==inf){
		cout<<"Impossible";	return;
	}

	if(x-2>=0 && y-1>=0 && mini==dist[x-2][y-1]){
		cout<<"UL ";	printer(x-2,y-1);	return;
	}
	if(x-2>=0 && y+1<n && mini==dist[x-2][y+1]){
		cout<<"UR ";	printer(x-2,y+1);	return;
	}
	if(x>=0 && y+2<n && mini==dist[x][y+2]){
		cout<<"R ";	printer(x,y+2);	return;
	}
	if(x+2<n && y+1<n && mini==dist[x+2][y+1]){
		cout<<"LR ";	printer(x+2,y+1);	return;
	}
	if(x+2<n && y-1>=0 && mini==dist[x+2][y-1]){
		cout<<"LL ";	printer(x+2,y-1);	return;
	}
	if(x>=0 && y-2>=0 && mini==dist[x][y-2]){
		cout<<"L ";	printer(x,y-2);	return;
	}

}

int main(){
	cin>>n>>is>>js>>ie>>je;
	dist=(int**)calloc(n,sizeof(int*));
	for(int i=0;i<n;i++){
		dist[i]=(int*)calloc(n,sizeof(int));
		for(int j=0;j<n;j++)	dist[i][j]=inf;
	}
	dist[ie][je]=0;
	fun(ie,je);
	if(dist[is][js]!=inf)	cout<<dist[is][js]<<endl;
	printer(is,js);
	return 0;
}