#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int arr[201][201];

void compute(int n,int a,int b)
{
    if(a-2>=0 && b-1>=0)
    {
        if(arr[a-2][b-1]==-1 || arr[a-2][b-1]>arr[a][b]+1)
        {arr[a-2][b-1]=arr[a][b]+1; 
            compute(n,a-2,b-1);
        
        }
        
    }
    if(a-2 >=0 && b+1<n)
    {
        if(arr[a-2][b+1]==-1 || arr[a-2][b+1]>arr[a][b]+1)
        {arr[a-2][b+1]=arr[a][b]+1; 
            compute(n,a-2,b+1);
         
        }
    }
    if(b+2<n)
    {
        if(arr[a][b+2]==-1 || arr[a][b+2]>arr[a][b]+1)
        {arr[a][b+2]=arr[a][b]+1; 
            compute(n,a,b+2);
         
        }
    }
    if(a+2<n && b+1<n)
    {
        if(arr[a+2][b+1]==-1 || arr[a+2][b+1]>arr[a][b]+1)
        {arr[a+2][b+1]=arr[a][b]+1; 
            compute(n,a+2,b+1);
        }
    }
    if(a+2<n && b-1>=0)
    {
        if(arr[a+2][b-1]==-1 || arr[a+2][b-1]>arr[a][b]+1)
        {arr[a+2][b-1]=arr[a][b]+1; 
            compute(n,a+2,b-1);
        }
    }
    if(b-2>=0)
    {
        if(arr[a][b-2]==-1 || arr[a][b-2]>arr[a][b]+1)
        {arr[a][b-2]=arr[a][b]+1; 
            compute(n,a,b-2);
        
        }
    }
}
void solve(int n,int x,int y,int a,int b)
{
    if(x==a && y==b)
        return;
    
        
    if(x-2>=0 && y-1>=0 && arr[x-2][y-1]+1==arr[x][y])
    {
        cout<<"UL ";
        solve(n,x-2,y-1,a,b);
    }
    
    else if(x-2>=0 && y+1<n && arr[x-2][y+1]+1==arr[x][y])
    {
        cout<<"UR ";
        solve(n,x-2,y+1,a,b);
    }
    
    else if(y+2<n && arr[x][y+2]+1==arr[x][y])
    {
        cout<<"R ";
        solve(n,x,y+2,a,b);
    }
    
    else if(x+2<n && y+1<n && arr[x+2][y+1]+1==arr[x][y])
    {
        cout<<"LR ";
        solve(n,x+2,y+1,a,b);
    }
    
    else if(x+2<n && y-1>=0 && arr[x+2][y-1]+1==arr[x][y])
    {
        cout<<"LL ";
        solve(n,x+2,y-1,a,b);
    }
    
    else if( y-2>=0 && arr[x][y-2]+1==arr[x][y])
    {
        cout<<"L ";
        solve(n,x,y-2,a,b);
    }
}
int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int n;
    int x,y,a,b;
    cin>>n>>x>>y>>a>>b;
    
    for(int i=0;i<n;i++)
        for(int j=0;j<n;j++)
            arr[i][j]=-1;
    arr[a][b]=0;
    compute(n,a,b);
    
    /*for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
            cout<<arr[i][j]<<"     ";
        cout<<endl;
    }
    cout<<endl;
    */
    if(arr[x][y]!=-1)
    {cout<<arr[x][y]<<endl;
    solve(n,x,y,a,b);
    }
    else
        cout<<"Impossible";
    return 0;
}