#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include <queue>
using namespace std;

typedef struct
{
    bool visited;
    int sh;
    int px;
    int py;
    int d;
}grid;

string ord[6] = {"UL", "UR", "R", "LR", "LL", "L"};
pair<int, int> shift[6];
queue <pair<int, int>> v;

bool is_safe(int n, int x, int y);

int main() 
{
    shift[0] = make_pair(-2, -1);
    shift[1] = make_pair(-2, 1);
    shift[2] = make_pair(0, 2);
    shift[3] = make_pair(2, 1);
    shift[4] = make_pair(2, -1);
    shift[5] = make_pair(0, -2);
    
    int n;
    cin >> n;
    
    grid **a = new grid*[n];
    for(int i = 0; i < n; i++)
    {
        a[i] = new grid[n];
        
        for(int j = 0; j < n; j++)
        {
            a[i][j].visited = false;
            //a[i][j].sh = a[i][j].px = a[i][j].py = -1;
        }
    }
    
    int is, js, ie, je;
    cin >> is >> js >> ie >> je;
    
    a[is][js].visited = true;
    a[is][js].sh = a[is][js].px = a[is][js].py = -1;
    a[is][js].d = 0;
    
    v.push(make_pair(is,js));
    
    int x,y;
    bool flag = false;
    while(!v.empty())
    {
        x = v.front().first;
        y = v.front().second;
        //cout << x << " " << y << endl;
        v.pop();
        for(int i = 0; i < 6; i++)
        {
            int x2 = x + shift[i].first;
            int y2 = y + shift[i].second;
            
            if(is_safe(n,x2,y2) && !(a[x2][y2].visited))
            {
                //cout << i << " " << x2 << " " << y2 << endl;
                a[x2][y2].visited = true;
                v.push(make_pair(x2,y2));
                a[x2][y2].sh = i;
                a[x2][y2].px = x;
                a[x2][y2].py = y;
                a[x2][y2].d = a[x][y].d + 1;
                
                if(x2 == ie && y2 == je)
                {
                    flag = true;
                    break;
                }
            }
        }
        
        if(flag)
        {
            break;
        }
    }
    
    if(v.empty())
    {
        cout << "Impossible" << endl;
        return 0;
    }
    
    //cout << "temp" << endl;
    vector<int> o;
    x = ie;
    y = je;
    int x2;
    while(!(x == is && y == js))
    {
        //cout << x << " " << y << endl;
        //cout << a[x][y].px << " " << a[x][y].py << endl;
        o.push_back(a[x][y].sh);
        x2 = a[x][y].px;
        y = a[x][y].py;
        x = x2;
    }
    
    //cout << "temp" << endl;
    cout << a[ie][je].d << endl;
    for(int i = o.size() - 1; i >= 0; i--)
    {
        cout << ord[o[i]] << " ";
    }
    cout << endl;
   
    return 0;
}

bool is_safe(int n, int x, int y)
{
    return x >= 0 && x < n && y >= 0 && y < n;
}