#include<bits/stdc++.h>
#define long long long
using namespace std;
long dr[]={-2,-2,0,2,2,0};
long dc[]={-1,1,2,1,-1,-2};
long dis[202][202],n,s1,s2,e1,e2;
map<pair<long,long>,pair<long,long> >mp;
queue<pair<long,long> >q;
vector<string>ans;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    memset(dis,-1,sizeof(dis));

    cin>>n;
    cin>>s1>>s2>>e1>>e2;
    q.push({s1,s2});
    dis[s1][s2]=0;

    while(q.size())
    {
        long x=q.front().first;
        long y=q.front().second;
        ///cout<<x<<" "<<y<<endl;
        q.pop();
        for(long i=0;i<6;i++)
        {
            long xx=x+dr[i];
            long yy=y+dc[i];
            if(xx<0||yy<0||xx>=n||yy>=n)continue;
            if(dis[xx][yy]!=-1)continue;
            dis[xx][yy]=dis[x][y]+1;
            q.push({xx,yy});
            mp[{xx,yy}]={x,y};
        }
    }
    if(dis[e1][e2]==-1)cout<<"Impossible"<<endl;
    else
    {
        cout<<dis[e1][e2]<<endl;
        while(true)
        {
            //if(mp[{e1,e2}]=={0,0})break;
            long ee1=mp[{e1,e2}].first;
            long ee2=mp[{e1,e2}].second;
            if(!ee1&&!ee2)break;
            long x=e1-ee1;
            long y=e2-ee2;
            if(x==-2&y==-1)
            {
                ans.push_back("UL");
            }
            if(x==-2&y==1)
            {
                ans.push_back("UR");
            }
            if(x==0&y==2)
            {
                ans.push_back("R");
            }
            if(x==2&y==1)
            {
                ans.push_back("LR");
            }
            if(x==2&y==-1)
            {
                ans.push_back("LL");
            }
            if(x==0&y==-2)
            {
                ans.push_back("L");
            }
            e1=ee1;
            e2=ee2;
        }
        reverse(ans.begin(),ans.end());
        for(auto x:ans)
        {
            cout<<x<<" ";
        }
        cout<<endl;
    }
    return 0;
}