#include<bits/stdc++.h>
using namespace std;
typedef pair<int,int> point;
bool check(int n,int x,int y)
{
    if(x>=n||y>=n||x<0||y<0) return false;
    return true;
}
int dirx[]= {-2,-2,0,2,2,0};
int diry[]= {-1,1,2,1,-1,-2};
int main()
{
    int n;
    cin>>n;
    point s,f;
    cin>>s.first>>s.second>>f.first>>f.second;
    point par[n][n];
    int visited[n][n];
    memset(visited,0,sizeof visited);
    queue<point>q;
    q.push(s);
    visited[s.first][s.second]=1;
    par[s.first][s.second]=make_pair(-1,-1);
    while(!q.empty())
    {

        int x=q.front().first,y=q.front().second;
        //if()
        q.pop();
        for(int i=0; i<6; i++)
        {
            int dx=x+dirx[i],dy=y+diry[i];

            if(!check(n,dx,dy)) continue;
            if(visited[dx][dy]==0)
            {
                par[dx][dy]=make_pair(x,y);
                q.push(make_pair(dx,dy));
                visited[dx][dy]=1;
            }
        }

    }
      if(visited[f.first][f.second]==0){
          cout<<"Impossible"<<endl;
          return 0;
      }
    stack<point>path;
    point target=f;
    while(par[target.first][target.second].first!=-1&&par[target.first][target.second].second!=-1)
    {
        // cout<<target.first<<" "<<target.second<<endl;
        path.push(target);
        target=par[target.first][target.second];

    }
    vector<point>ans;
    while(!path.empty())
    {
        ans.push_back(path.top());
        path.pop();
    }
    cout<<ans.size()<<endl;
    point prev=s;
    for(int j=0; j<ans.size(); j++)
    {
        int nowx=prev.first,nowy=prev.second;
        int i;
        for( i=0; i<6; i++)
        {
            int dx=nowx+dirx[i],dy=nowy+diry[i];

            if(!check(n,dx,dy)) continue;
            if(dx==ans[j].first&&dy==ans[j].second)
            {
                break;
            }

        }
        prev=ans[j];
        if(i==0)
        {
            cout<<"UL ";
        }
        if(i==1)
        {
            cout<<"UR ";
        }
        if(i==2)
        {
            cout<<"R ";
        }
        if(i==3)
        {
            cout<<"LR ";
        }
        if(i==4)
        {
            cout<<"LL ";
        }
        if(i==5)
        {
            cout<<"L ";
        }
    }





}