#include <bits/stdc++.h>

using namespace std;
bool success =false;
int mov_i[6]={-2,-2,0,2,2,0};
int mov_j[6]={-1,1,2,1,-1,-2};
stack<int> path,fpath;
int shortest= 9999;
int visited[300][300];
void copy_reverse(stack<int>& source, stack<int>& dest)
{
   
    while(!source.empty()){
        dest.push(source.top());
        source.pop();
    }
}


void printShortestPath(int n, int i_start, int j_start, int i_end, int j_end,int move) {
    if(i_start <0 || i_start >= n ||  j_start <0 || j_start >= n || (visited[i_start][j_start]!=-1 && visited[i_start][j_start] <=move ) || move >= shortest){
            if(!path.empty())
                path.pop();
            return;
    }
    visited[i_start][j_start]=move;
    if(i_start==i_end && j_start ==j_end){
        shortest= move;
        success =true;         
        stack<int> temp;
        temp= path;
        while(!fpath.empty())
            fpath.pop();
        copy_reverse(temp,fpath);
        path.pop();        
        return;
    }   
    
    
    
    
    for(int i=0;i<6;i++){
            path.push(i);
            printShortestPath(n,i_start+ mov_i[i],j_start + mov_j[i],i_end,j_end,move+1);
            
    }
    
    
    
    path.pop();
    return;    
}

int main() {
    int n;
    cin >> n;
    int i_start;
    int j_start;
    int i_end;
    int j_end;
    cin >> i_start >> j_start >> i_end >> j_end;
    for(int i =0;i<n;i++){
        for(int j=0;j<n;j++){
            visited[i][j]=-1;
        }
    }
    printShortestPath(n, i_start, j_start, i_end, j_end,0);
    if(success){
        cout<<shortest<<endl;
        while(!fpath.empty()){
            if(fpath.top()==0)
                cout<<"UL ";
            else if(fpath.top()==1)
                cout<<"UR ";
            else if(fpath.top()==2)
                cout<<"R ";
            else if(fpath.top()==3)
                cout<<"LR ";
            else if(fpath.top()==4)
                cout<<"LL ";
            else if(fpath.top()==5)
                cout<<"L ";        
           fpath.pop();
        }
    }
    else
        cout<<"Impossible"<<endl;
    return 0;
}