#include<bits/stdc++.h>
using namespace std;
#define ld long double
#define ull unsigned long long
#define ll long long
#define mod 1000000007
#define f(i,n) for( ll (i)= 0;(i)<(n);(i)++)
#define faster ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define lp pair<ll,ll>
#define mp make_pair
#define mt make_tuple
#define M_H priority_queue<lp ,vector<lp >,greater<lp > >
#define rep(i,j,n) for( ll (i)= j;(i)<(n);(i)++)
#define pb push_back
ll n;
ll vis[201][201]= {{0}};
bool isvalid(ll x,ll y)
{
    return(x>=0 && x<n && y>=0 && y<n);
}
queue< pair< pair<ll,ll>,pair<ll,string> > >q;
vector<string>vec;
string str;
ll bfs(ll x,ll y,ll a,ll b)
{
    ll dist=0;
    vis[x][y]=1;
    q.push({{x,y},{0,""}});
    while(!q.empty())
    {
        pair< pair<ll,ll>,pair<ll,string> >p=q.front();
        ll i=p.first.first;
        ll j=p.first.second;
        ll d=p.second.first;
        string s=p.second.second;
        if(i==a && j==b)
        {
            str=s;
            return d;
        }

        q.pop();
        if(isvalid(i-2,j-1) && !vis[i-2][j-1])  //UL
        {
            vis[i-2][j-1]=1;
            q.push({{i-2,j-1},{d+1,s+"UL$"}});
        }
        if(isvalid(i-2,j+1) && !vis[i-2][j+1])  //UR
        {
            vis[i-2][j+1]=1;
            q.push({{i-2,j+1},{d+1,s+"UR$"}});
        }

        if(isvalid(i,j+2) && !vis[i][j+2])  //R
        {
            vis[i][j+2]=1;
            q.push({{i,j+2},{d+1,s+"R$"}});
        }

        if(isvalid(i+2,j+1) && !vis[i+2][j+1])  //LR
        {
            vis[i+2][j+1]=1;
            q.push({{i+2,j+1},{d+1,s+"LR$"}});
        }
        if(isvalid(i+2,j-1) && !vis[i+2][j-1])  //LL
        {
            vis[i+2][j-1]=1;
            q.push({{i+2,j-1},{d+1,s+"LL$"}});
        }
        if(isvalid(i,j-2) && !vis[i][j-2])  //L
        {
            vis[i][j-2]=1;
            q.push({{i,j-2},{d+1,s+"L$"}});
        }
    }
    return -1;
}
int main()
{
    faster;
    cin>>n;
    ll x,y,a,b;
    cin>>x>>y>>a>>b;
    ll d=bfs(x,y,a,b);
    if(d==-1)
        cout<<"Impossible"<<endl;
    else
    {
        cout<<d<<endl;
        ll l=str.length();
        f(i,l)
        {
            if(str[i]=='$')
                cout<<" ";
            else
                cout<<str[i];
        }
        cout<<endl;
    }
    return 0;
}