#include <iostream>
using namespace std;
string cpy(string st,string **str,int i_start,int j_start)
{
   string old;
   if(st == "UL")
   {
       old = str[i_start-2][j_start-1];	
   }
   if(st == "UR")
   {
       old = str[i_start-2][j_start+1];
   }
   if(st == "R")
   {
        old = str[i_start][j_start+2];	
   }
   if(st == "LR")
   {
        old = str[i_start+2][j_start-1];
   }
   if(st == "LL")
   {
        old = str[i_start+2][j_start+1];
   }
   if(st == "L")
   {
        old = str[i_start][j_start-2];	
   }
   string ans;
   ans = st+ " " +old;
   return ans;
}
int fun(int **mat,int i_start,int j_start,int i_end,int j_end,string **str,int n)
{
	if(i_start == i_end && j_start == j_end)
	{
	//	path[k] = "k"
		return 0;
	}
//	cout << i_start << " " << j_start << endl;
	if(mat[i_start][j_start] != 0)
	{
		return mat[i_start][j_start];
	}
	int a = 10000000;
	mat[i_start][j_start] = -1;
	string st;
	if(i_start-2 >= 0 && j_start-1 >= 0)//UL 
	{
		if(mat[i_start-2][j_start-1] != -1)
		{
		a = fun(mat,i_start-2,j_start-1,i_end,j_end,str,n);
		st =  "UL";
		}
		
	}
	if(i_start-2 >= 0 && j_start+1 < n)//UR
	{
		if(mat[i_start-2][j_start+1] != -1)
		{
		int b = fun(mat,i_start-2,j_start+1,i_end,j_end,str,n);
		if(b < a)
		{
			a = b;
			st = "UR";
		}
		}
	}
	if(j_start+2 < n)//R
	{
		if(mat[i_start][j_start+2] != -1)
		{
		int b = fun(mat,i_start,j_start+2,i_end,j_end,str,n);
		if(b < a)
		{
			a = b;
	                       st = "R";
		}
		}
		
	}
	if(i_start+2 < n && j_start-1 >= 0)//LR 
	{
	
		if(mat[i_start+2][j_start-1] != -1)
		{
			
		int b =fun(mat,i_start+2,j_start-1,i_end,j_end,str,n);
		if(b < a)
		{
			a = b;
		      st = "LR";
		}
		}
	}
	if(i_start+2 < n && j_start+1 < n)//LL
	{
		if(mat[i_start+2][j_start+1] != -1)
		{
		   	
		int b = fun(mat,i_start+2,j_start+1,i_end,j_end,str,n);
		if(b < a)
		{
			a = b;
		              st = "LL";
		}
		}
	}
	if(j_start-2 >= 0)//L
	{
			
		if(mat[i_start][j_start-2] != -1)
		{
		int b = fun(mat,i_start,j_start-2,i_end,j_end,str,n);
		if(b < a)
		{
			a = b;
		              st = "L";
		}
		}
	}
	mat[i_start][j_start] = 1+a;
              str[i_start][j_start] = cpy(st,str,i_start,j_start);
//	cout << i_start << " " << j_start <<endl;
	return 1+a;
}
int main() {
	// your code goes here
	int n;
	cin >> n;
	int **a = new int*[n];
	for(int i = 0;i<n;i++)
	{
		a[i] = new int[n];
		for(int j = 0;j<n;j++)
		{
			a[i][j] = 0;
		}
	}
	int i_start,j_start,i_end,j_end;
	cin >> i_start >> j_start >> i_end >> j_end;
	string **str = new string*[n];
	for(int i = 0;i<n;i++)
	{
		str[i] = new string[n];
		for(int j = 0;j<n;j++)
		{
			str[i][j] = "\0";
		}
	}
     int ans = fun(a,i_start,j_start,i_end,j_end,str,n);
           if(ans >= 10000000)
           {
           	cout << "Impossible";
           }
           else
           {
           	cout << ans << endl;
           	cout << str[i_start][j_start] <<endl;
           }
	return 0;
}