#include <bits/stdc++.h>

using namespace std;

#define f first
#define s second
#define mp make_pair

int N,A,B,C,D;
int x[] = {-2,-2,0,+2,+2,0};
int y[] = {-1,+1,+2,+1,-1,-2};
int mat[205][205] = {{0}};
bool visited[205][205];
int parent[205][205];

bool isvalid(int i,int j)
{
    return (i >= 0 && i < N) && (j >=0 && j < N);
}
void bfs()
{
    int a = A, b= B;
    queue<pair<int,int>> Q;
    Q.push(mp(a,b));
    mat[a][b] = 0;
    //Q.push(mp(-1,-1));
    while(!Q.empty())
    {
        pair<int,int> foo = Q.front();
        Q.pop();
        a = foo.f;
        b = foo.s;
        visited[a][b] = true;
        for(int i = 0;i<6;++i)
        {
            int p = a+x[i],q = b+y[i]; 
            if(isvalid(p,q) && !(visited[p][q]))
            {
                visited[p][q] = true;
                Q.push(mp(p,q));
                mat[p][q] = mat[a][b] + 1;
                parent[p][q] = i+1;
            }
        }
    }
     
}
int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    cin>>N;
    cin>>A>>B>>C>>D;
    int X = A, Y = B;
    memset(visited,0,sizeof(visited));
    //cout<<N<<" "<<A<<" "<<B<<" "<<C<<" "<<D<<endl;
    string Ans = "";
    bfs();
  /*  for(int i=0;i<N;++i)
    {
        for(int j= 0;j<N;++j) cout<<mat[i][j]<<" ";cout<<endl;
    }
    */
    if(!(visited[C][D])) cout<<"Impossible";
    else
    {
        
        int num = mat[C][D];
        while(C != X || D != Y)
        {
            //cout<<C<<" "<<D<<endl;;
            if(parent[C][D] == 1)
            {
                Ans = "UL " + Ans;
                C = C + 2;
                D = D + 1;
            }
            else if(parent[C][D] == 2)
            {
                Ans = "UR " + Ans;
                C = C + 2;
                D = D - 1;
            }
            else if(parent[C][D] == 3)
            {
                Ans = "R " + Ans;
                D = D - 2;
            }
            else if(parent[C][D] == 4)
            {
                Ans = "LR " + Ans;
                C = C - 2;
                D = D - 1;
            }
            else if(parent[C][D] == 5)
            {
                Ans = "LL " + Ans;
                C = C - 2;
                D = D + 1;
            }
            else if(parent[C][D] == 6)
            {
                Ans = "L " + Ans;
                D = D + 2;
            }
        }
        cout<<num<<endl;
        cout<<Ans;
    }
    return 0;
}