#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD 1000000007
ll n,vis[500][500],dist[500][500];
pair<ll,ll>par[500][500];
ll dx[6]={-2,-2,0,2,2,0};
ll dy[6]={-1,1,2,1,-1,-2};
string sk[6]={"UL", "UR", "R", "LR", "LL", "L"};
bool inrange(ll nxx,ll nyy)
{
    if(nxx>=0&&nxx<n&&nyy>=0&&nyy<n)
    return 1;
    return 0;
}
void bfs(ll sx,ll sy)
{
    queue<pair<ll,ll> > q;
    ll i,j,k,nx,ny,nx1,ny1;
    q.push({sx,sy});
    for(i=0;i<300;i++)
    {
        for(j=0;j<300;j++)
        {
            vis[i][j]=0;
            dist[i][j]=1000000;
        }
    }
    dist[sx][sy]=0;
    while(!q.empty())
    {
        nx=q.front().first;
        ny=q.front().second;
        q.pop();
        if(vis[nx][ny])
        continue;
        vis[nx][ny]=1;
        for(i=0;i<6;i++)
        {
            nx1=nx+dx[i];
            ny1=ny+dy[i];
           // cout<<nx<<" "<<ny<<" "<<nx1<<" "<<ny1<<"\n";
            if(inrange(nx1,ny1)&&(!vis[nx1][ny1])&&(dist[nx1][ny1]>(1+dist[nx][ny])))
            {
               // cout<<nx<<" "<<ny<<" "<<nx1<<" "<<ny1<<"\n";
                dist[nx1][ny1]=1+dist[nx][ny];
                par[nx1][ny1]={nx,ny};
                q.push({nx1,ny1});
            }
        }
    }
}
string gofrom(ll dxx,ll dyy,ll sx,ll sy)
{
    ll i,j,kx,ky;
    kx=dxx-sx;
    ky=dyy-sy;
    for(i=0;i<6;i++)
    {
        if(kx==dx[i]&&ky==dy[i])
        {
            return sk[i];
        }
    }
    return "";
}
int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    ll i,j,k,sx,sy,dx,dy;
    cin>>n;
    cin>>sx>>sy>>dx>>dy;
    bfs(sx,sy);
    if(dist[dx][dy]>=100000)
    cout<<"Impossible\n";
    else
    {
        stack<string>st;
        cout<<dist[dx][dy]<<"\n";
        while(true)
        {
            if(dx==sx&&dy==sy)
            break;
            st.push(gofrom(dx,dy,par[dx][dy].first,par[dx][dy].second));
            ll a,b;
            a=par[dx][dy].first;
            b=par[dx][dy].second;
            //cout<<dx<<" "<<dy<<" "<<a<<" "<<b<<"\n";
            dx=a;
            dy=b;
        }
        while(!st.empty())
        {
            cout<<st.top()<<" ";
            st.pop();
        }
    }
    return 0;
}