#include <bits/stdc++.h>
using namespace std;

int n,a,b,x,y;
vector <vector<pair<int,int>>> v;

void bfs()
{
    int i,j;
    queue <pair<int,int>> q;
    q.push(make_pair(a,b));
    v[a][b].first=1;
    while(!q.empty())
    {
        i=q.front().first;
        j=q.front().second;
        q.pop();
        if(i>1 && j>0 && v[i-2][j-1].first==0)
        {
            q.push(make_pair(i-2,j-1));
            v[i-2][j-1].first=v[i][j].first+1;
            v[i-2][j-1].second=1;
        }
        if(i>1 && j<n-1 && v[i-2][j+1].first==0)
        {
            q.push(make_pair(i-2,j+1));
            v[i-2][j+1].first=v[i][j].first+1;
            v[i-2][j+1].second=2;
        }
        if(j<n-2 && v[i][j+2].first==0)
        {
            q.push(make_pair(i,j+2));
            v[i][j+2].first=v[i][j].first+1;
            v[i][j+2].second=3;
        }
        if(i<n-2 && j<n-1 && v[i+2][j+1].first==0)
        {
            q.push(make_pair(i+2,j+1));
            v[i+2][j+1].first=v[i][j].first+1;
            v[i+2][j+1].second=4;
        }
        if(i<n-2 && j>0 && v[i+2][j-1].first==0)
        {
            q.push(make_pair(i+2,j-1));
            v[i+2][j-1].first=v[i][j].first+1;
            v[i+2][j-1].second=5;
        }
        if(j>1 && v[i][j-2].first==0)
        {
            q.push(make_pair(i,j-2));
            v[i][j-2].first=v[i][j].first+1;
            v[i][j-2].second=6;
        }
    }
}

int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    cin>>n>>a>>b>>x>>y;
    pair<int,int> p=make_pair(0,0);
    int i,j;
    vector <pair<int,int>> vi;
    for(i=0;i<n;i++)
        v.push_back(vi);
    for(i=0;i<n;i++)
        for(j=0;j<n;j++)
            v[i].push_back(p);
    bfs();
    if(v[x][y].first==0)
        cout<<"Impossible";
    else
    {
        cout<<v[x][y].first-1<<"\n";
        i=x;
        j=y;
        stack <int> s;
        while(i!=a || j!=b)
        {
            if(v[i][j].second==1)
            {
                s.push(1);
                i+=2;
                j+=1;
            }
            else if(v[i][j].second==2)
            {
                s.push(2);
                i+=2;
                j-=1;
            }
            else if(v[i][j].second==3)
            {
                s.push(3);
                j-=2;
            }
            else if(v[i][j].second==4)
            {
                s.push(4);
                i-=2;
                j-=1;
            }
            else if(v[i][j].second==5)
            {
                s.push(5);
                i-=2;
                j+=1;
            }
            else if(v[i][j].second==6)
            {
                s.push(6);
                j+=2;
            }
        }
        while(!s.empty())
        {
            i=s.top();
            s.pop();
            if(i==1)
                cout<<"UL ";
            else if(i==2)
                cout<<"UR ";
            else if(i==3)
                cout<<"R ";
            else if(i==4)
                cout<<"LR ";
            else if(i==5)
                cout<<"LL ";
            else if(i==6)
                cout<<"L ";
        }
    }
    return 0;
}