#include <bits/stdc++.h>

#define fn1 ""

using namespace std;

const int mn = 2 * int(1e2) + 10;
const int mod = 1 * int(1e5) + 10;
const int mm = 1 * int(1e5) + 10;

int tt, ntest = 1;
int tr[mn][mn], ok[mn][mn];
int mx[6] = {- 2, -2, 0, 2, 2, 0};
int my[6] = {- 1, 1, 2, 1, - 1, - 2};
int n, xs, xe, ye, ys;
string s[6] = {"UL", "UR", "R", "LR", "LL", "L"};

void docfile()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    if (ifstream("test.inp"))
    {
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }else if (ifstream(fn1".inp"))
    {
        freopen(fn1".inp", "r", stdin);
        freopen(fn1".out", "w", stdout);
    }
}

template <typename T> inline void read(T& x)
{
    x = 0; T f = 1;
    char ch = getchar();
    while (!isdigit(ch)) f = ch == '-' ? - f : f, ch = getchar();
    while (isdigit(ch)) x = x * 10 + ch - '0', ch = getchar();
    x *= f;
}

template <typename T>
inline void write(T a)
{
    int i = 0;
    char S[20];
    if (a == 0) {putchar('0'); return;}
    while(a > 0)
    {
        S[i++] = a % 10 + '0';
        a /= 10;
    }
    --i;
    while(i >= 0) putchar(S[i--]);
}

void enter()
{
    cin >> n;
    cin >> xs >> ys >> xe >> ye;
}

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

void solve()
{
	ok[xs][ys] = 1;
	queue<pair <int, int> > qu;
	qu.push({xs, ys});
    while (qu.size())
	{
        int x = qu.front().first, y = qu.front().second;
        qu.pop();
        if (x == xe && y == ye)
		{
			cout << ok[x][y] - 1 << "\n";
			vector <string> v;
            while (!(x == xs && y == ys))
			{
				v.push_back(s[tr[x][y]]);
                int X = x - mx[tr[x][y]], Y = y - my[tr[x][y]];
                x = X; y = Y;
			}
			reverse(v.begin(), v.end());
			for (string x : v) cout << x << " ";
			return;
		}
        for (int k = 0; k < 6; ++ k)
		{
            int X = x + mx[k], Y = y + my[k];
            if (kt (X, Y) && !ok[X][Y])
			{
				ok[X][Y] = ok[x][y] + 1;
				tr[X][Y] = k;
				qu.push({X, Y});
			}
		}
	}
	cout << "Impossible";
}

void print_result()
{

}

int main()
{
    docfile();
    //cin>>ntest;
    for (tt = 1; tt <= ntest; ++ tt)
    {
        enter();
        solve();
        print_result();
    }
}