#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define sp ios_base::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
#define mod 10000007
#define mp make_pair
#define pi pair<int,int>
#define vi vector<int>
#define vl vector<ll>
#define pb push_back
#define inf 1000000000
#define mxn 200005
int main(){
int n;
cin>>n;
int x1,x2,y1,y2;
cin>>x1>>y1>>x2>>y2;
int dist[n][n],check[n][n];
memset(check,0,sizeof check);
queue<pi>q;
q.push(mp(x1,y1));
dist[x1][y1]=0;
check[x1][y1]=1;
vector< vector<pi> >par;
par.resize(n,vector<pi>(n));
vector< vector<string> >mov;
mov.resize(n,vector<string>(n));

while(!q.empty()){
    int u=q.front().first;
    int v=q.front().second;
    q.pop();
    int x,y;
    x=u-2;
    y=v-1;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="UL";
        }
    }
    x=u-2;
    y=v+1;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="UR";
        }
    }
    x=u;
    y=v+2;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="R";
        }
    }
    x=u+2;
    y=v+1;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="LR";
        }
    }
    x=u+2;
    y=v-1;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="LL";
        }
    }
    x=u;
    y=v-2;
    if(x>=0&&x<n&&y>=0&&y<n){
        if(check[x][y]==0){
            check[x][y]=1;
            dist[x][y]=dist[u][v]+1;
            q.push(mp(x,y));
            par[x][y]=mp(u,v);
            mov[x][y]="L";
        }
    }
}
//cout<<2312<<endl;
if(check[x2][y2]==0){
    cout<<"Impossible"<<endl;
    return 0;
}
cout<<dist[x2][y2]<<endl;
vector<string>vs;
int u=x2,v=y2;
while(u!=x1||v!=y1){
    vs.push_back(mov[u][v]);
    int p,q;
    p=par[u][v].first;
    q=par[u][v].second;
    u=p;
    v=q;
}
for(int i=vs.size()-1;i>=0;i--)
    cout<<vs[i]<<" ";
cout<<endl;
return 0;
}