#include<bits/stdc++.h>
using namespace std;
#define toDigit(c) (c-'0')
#define __FastIO ios_base::sync_with_stdio(false); cin.tie(0)
typedef long long int ll;
pair<ll,pair<ll,ll>>vis[205][205];
ll colNum[]={-1,1,2,1,-1,-2};
ll rowNum[]={-2,-2,0,2,2,0};
string dir[]={"UL","UR","R","LR","LL","L"};
map<pair<ll,ll>,string> mp;
bool isValid(ll row,ll col,ll n)
{
    return (row >= 0) && (row < n) &&
           (col >= 0) && (col < n);
}
void bfs(ll sx,ll sy,ll ex,ll ey,ll n){
    mp[make_pair(-1,-2)]="UL";
    mp[make_pair(1,-2)]="UR";
    mp[make_pair(2,0)]="R";
    mp[make_pair(1,2)]="LR";
    mp[make_pair(-1,2)]="LL";
    mp[make_pair(-2,0)]="L";
    for(ll i=0;i<n;i++){
        for(ll j=0;j<n;j++){
            vis[i][j].first=0;
        }
    }
    queue<pair<ll,ll> > q;
    q.push(make_pair(sx,sy));
    vis[sx][sy].first=1;
    vis[sx][sy].second = make_pair(sx,sy);
    vector<string> v;
    while(!q.empty()){
            ll sz=q.size();
            while(sz--){
            pair<ll,ll> p = q.front();
            q.pop();
            if(p.first==ex&&p.second==ey){
                break;
            }
            for (int i = 0; i < 6; i++){
                int row = p.first + rowNum[i];
                int col = p.second + colNum[i];
                if (isValid(row, col,n) &&!vis[row][col].first){
                    vis[row][col].first = vis[p.first][p.second].first+1;
                    vis[row][col].second = make_pair(p.first,p.second);
                    if(row==ex&&col==ey)
                        break;
                    q.push(make_pair(row, col));
                  //  cout<<row<<" "<<col<<" "<<p.first<<" "<<p.second<<endl;
                }
            }
        }
    }
//       for(ll i=0;i<n;i++){
//          for(ll j=0;j<n;j++){
//               cout<<vis[i][j].first<<" ";
//           }
//           cout<<endl;
//        }
        if(vis[ex][ey].first){
            cout<<vis[ex][ey].first-1<<endl;
            vector<string> v;
            while(sx!=ex||sy!=ey){
               // cout<<ex<<" "<<ey<<"         "<<vis[ex][ey].second.first<<" "<<vis[ex][ey].second.second<<endl;
                ll x=vis[ex][ey].second.first;
                ll y=vis[ex][ey].second.second;
                v.push_back(mp[make_pair(ey-y,ex-x)]);
                ex=x;
                ey=y;
            }
            reverse(begin(v),end(v));
            for(auto it=begin(v);it!=end(v);it++)
                cout<<*it<<" ";
         }
        else
            cout<<"Impossible"<<endl;
}
int main(){
    __FastIO;
    ll n;
    cin>>n;
    ll sx,sy,ey,ex;
    cin>>sx>>sy>>ex>>ey;
    bfs(sx,sy,ex,ey,n);

}