#include <iostream>
#include <vector>

using namespace std;

int n;
int y1, x1, y2, x2;
int g[300][300];
vector<pair<int,int>> v;
int py[300][300], px[300][300];
string f[300][300];

int main() {
    cin >> n;
    cin >> y1 >> x1 >> y2 >> x2;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            g[i][j] = 1e9;
        }
    }
    g[y1][x1] = 0;
    v.push_back({y1,x1});
    int xx[] = {-1,1,2,1,-1,-2};
    int yy[] = {-2,-2,0,2,2,0};
    string ss[] = {"UL","UR","R","LR","LL","L"};
    for (int i = 0; i < v.size(); i++) {
        int cc = g[v[i].first][v[i].second];
        for (int j = 0; j < 6; j++) {
            int uy = v[i].first+yy[j];
            int ux = v[i].second+xx[j];
            if (uy < 0 || uy >= n || ux < 0 || ux >= n) continue;
            if (cc+1 >= g[uy][ux]) continue;
            g[uy][ux] = cc+1;
            py[uy][ux] = v[i].first;
            px[uy][ux] = v[i].second;
            f[uy][ux] = ss[j];
            v.push_back({uy,ux});
        }
    }
    if (g[y2][x2] == 1e9) {
        cout << "Impossible\n";
        return 0;
    }
    cout << g[y2][x2] << "\n";
    vector<string> vv;
    int uy = y2, ux = x2;
    while (f[uy][ux] != "") {
        vv.push_back(f[uy][ux]);
        int vy = uy, vx = ux;
        uy = py[vy][vx];
        ux = px[vy][vx];
    }
    for (int i = vv.size()-1; i >= 0; i--) cout << vv[i] << " ";
    cout << "\n";
}