#define debug_iv_ac ios::sync_with_stdio(false);cin.tie(NULL);
#include <bits/stdc++.h>
 
#define pb push_back
#define  mp make_pair
#define pp pop_back
#define pf push_front
#define fi first
#define se second
#define maxn 300005
typedef long long ll;
using namespace std;
#define pi pair<int,int>
// UL, UR, R, LR, LL, L
int a[] = {-2,-2,0,2,2,0};
int b[] = {-1,1,2,1,-1,-2};
string s[] = {"UL","UR","R","LR","LL","L"};
int dis[205][205];
pi pa[205][205];
int main() {
    int n;
    cin>>n;
    int stx,sty,enx,eny;
    cin>>stx>>sty>>enx>>eny;
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++) dis[i][j] = 1e8;
    }
    dis[stx][sty] = 0;
    queue<pi> q;
    q.push(mp(stx,sty));
    while(!q.empty())
    {
        pi p = q.front();
        //cout<<p.fi<<" "<<p.se<<" "<<dis[p.fi][p.se]<<endl;
        q.pop();
        for(int i=0;i<6;i++)
        {
            int x = p.fi+a[i],y = p.se+b[i];
            if(x>=0&&x<n&&y>=0&&y<n)
            {
                if(dis[x][y]>1+dis[p.fi][p.se]) dis[x][y] = 1+dis[p.fi][p.se],pa[x][y] = mp(p.fi,p.se),q.push(mp(x,y));
            }
        }
    }
    if(dis[enx][eny]==1e8)
    {
        cout<<"Impossible";
        return 0;
    }
    cout<<dis[enx][eny]<<endl;
    vector<string> v;
    int p1 = enx,p2 = eny;
    //cout<<p1<<" "<<p2<<endl;
    //cout<<stx<<" "<<sty<<endl;
    //cout<<pa[p1][p2].fi<<" "<<pa[p1][p2].se<<endl;
    while(1)
    {
        //cout<<p1<<" "<<p2<<endl;
        pi p = pa[p1][p2];
        //cout<<p.fi<<" "<<p.se<<endl;
        for(int i=0;i<6;i++)
        {
            int x = p.fi + a[i],y = p.se + b[i];
            if(x==p1&&y==p2)
            {
                v.pb(s[i]);p1 = p.fi,p2 = p.se;break;
            }
        }
        if(p1==stx&&p2==sty) break;
    }
    for(int i=v.size()-1;i>=0;i--) cout<<v[i]<<" ";
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    return 0;
}