using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		String[] move = new String[]{"UL", "UR", "R", "LR", "LL", "L"};
		int[] dx = new int[]{-1, 1, 2, 1,-1,-2};
		int[] dy = new int[]{-2,-2, 0, 2, 2, 0};
		
		int[][] b = new int[N][];
		int[][] m = new int[N][];
		for(int i=0;i<N;i++){
			b[i] = new int[N];
			m[i] = new int[N];
			for(int j=0;j<N;j++){
				b[i][j] = 999999999;
				m[i][j] = -1;
			}
		}
		
		Queue<int> Q = new Queue<int>();
		b[r0][c0] = 0;
		Q.Enqueue(r0 * N + c0);
		while(Q.Count>0){
			var now = Q.Dequeue();
			int r = now / N;
			int c = now % N;
			for(int t=0;t<6;t++){
				int nr = r + dy[t];
				int nc = c + dx[t];
				if(!InRange(nr, 0, N) || !InRange(nc, 0, N)) continue;
				if(b[nr][nc] <= b[r][c] + 1) continue;
				b[nr][nc] = b[r][c] + 1;
				m[nr][nc] = t;
				Q.Enqueue(nr * N + nc);
			}
		}
		
		if(m[r1][c1] == -1){
			Console.WriteLine("Impossible");
			return;
		}
		
		List<int> ans = new List<int>();
		int rr = r1, cc = c1;
		while(m[rr][cc] != -1){
			ans.Add(m[rr][cc]);
			rr -= dy[ans[ans.Count -1]];
			cc -= dx[ans[ans.Count -1]];
		}
		Console.WriteLine(ans.Count);
		ans.Reverse();
		Console.WriteLine(String.Join(" ",ans.Select(t => move[t])));
		
	}
	
	bool InRange(int t, int l, int r){
		return l <= t && t < r;
	}
	
	int N;
	int r0,c0,r1,c1;
	public Sol(){
		N = ri();
		var d = ria();
		r0 = d[0]; c0 = d[1]; r1 = d[2]; c1 = d[3];
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}