import java.io.*;
import java.math.*;
import java.security.KeyStore.Entry;
import java.util.*;

class SPOJANDCC
{
	@SuppressWarnings("rawtypes")
	static InputReader in;
	static PrintWriter out;

	static class Pair
	{
		int x, y;

		Pair(int a, int b)
		{
			x = a;
			y = b;
		}
	}

	static boolean pos(int x, int y, int n)
	{
		if (x >= 0 && y >= 0 && x < n && y < n)
			return true;
		return false;
	}

	static void solve()
	{
		int n = in.ni();
		int arr[][] = new int[n][n];
		String a[][] = new String[n][n];
		int sx = in.ni(), sy = in.ni(), ex = in.ni(), ey = in.ni();
		for (int i = 0; i < n; i++)
			Arrays.fill(arr[i], Integer.MAX_VALUE);
		arr[sy][sx] = 0;
		Queue<Pair> q = new LinkedList<Pair>();
		Pair p = new Pair(sy, sx);
		q.add(p);
		int yy[][] = { { -1, -2 }, { 1, -2 }, { 2, 0 }, { 1, 2 }, { -1, 2 }, { -2, 0 } };
		String h[] = { "UL ", "UR ", "R ", "LR ", "LL ", "L " };
		while (!q.isEmpty())
		{
			p = q.poll();
			int x = p.x, y = p.y;
			//out.println(x + " " + y);
			for (int i = 0; i < yy.length; i++)
			{
				int nx = x + yy[i][0], ny = y + yy[i][1];
				if (pos(nx, ny, n) && arr[nx][ny] > arr[x][y] + 1)
				{
					arr[nx][ny] = arr[x][y] + 1;
					a[nx][ny] = a[x][y] != null ? a[x][y] + h[i] : h[i];
					q.add(new Pair(nx, ny));
				}
			}
		}
		if (arr[ey][ex] == Integer.MAX_VALUE)
			out.println("Impossible");
		else
		{
			out.println(arr[ey][ex]);
			out.println(a[ey][ex]);
		}
	}

	@SuppressWarnings("rawtypes")
	static void soln()
	{
		in = new InputReader(System.in);
		out = new PrintWriter(System.out);
		solve();
		out.flush();
	}

	static void debug(Object... o)
	{
		System.out.println(Arrays.deepToString(o));
	}

	public static void main(String[] args)
	{
		new Thread(null, new Runnable()
		{
			public void run()
			{
				try
				{
					soln();
				} catch (Exception e)
				{
					e.printStackTrace();
				}
			}
		}, "1", 1 << 26).start();
	}

	static class InputReader<SpaceCharFilter>
	{

		private final InputStream stream;
		private final byte[] buf = new byte[8192];
		private int curChar, snumChars;
		private SpaceCharFilter filter;

		public InputReader(InputStream stream)
		{
			this.stream = stream;
		}

		public int snext()
		{
			if (snumChars == -1)
				throw new InputMismatchException();
			if (curChar >= snumChars)
			{
				curChar = 0;
				try
				{
					snumChars = stream.read(buf);
				} catch (IOException e)
				{
					throw new InputMismatchException();
				}
				if (snumChars <= 0)
					return -1;
			}
			return buf[curChar++];
		}

		public int ni()
		{
			int c = snext();
			while (isSpaceChar(c))
			{
				c = snext();
			}
			int sgn = 1;
			if (c == '-')
			{
				sgn = -1;
				c = snext();
			}
			int res = 0;
			do
			{
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res *= 10;
				res += c - '0';
				c = snext();
			} while (!isSpaceChar(c));
			return res * sgn;
		}

		public long nl()
		{
			int c = snext();
			while (isSpaceChar(c))
			{
				c = snext();
			}
			int sgn = 1;
			if (c == '-')
			{
				sgn = -1;
				c = snext();
			}
			long res = 0;
			do
			{
				if (c < '0' || c > '9')
					throw new InputMismatchException();
				res *= 10;
				res += c - '0';
				c = snext();
			} while (!isSpaceChar(c));
			return res * sgn;
		}

		public int[] nextIntArray(int n)
		{
			int a[] = new int[n];
			for (int i = 0; i < n; i++)
			{
				a[i] = ni();
			}
			return a;
		}

		public long[] nextLongArray(int n)
		{
			long a[] = new long[n];
			for (int i = 0; i < n; i++)
			{
				a[i] = nl();
			}
			return a;
		}

		public String readString()
		{
			int c = snext();
			while (isSpaceChar(c))
			{
				c = snext();
			}
			StringBuilder res = new StringBuilder();
			do
			{
				res.appendCodePoint(c);
				c = snext();
			} while (!isSpaceChar(c));
			return res.toString();
		}

		public String nextLine()
		{
			int c = snext();
			while (isSpaceChar(c))
				c = snext();
			StringBuilder res = new StringBuilder();
			do
			{
				res.appendCodePoint(c);
				c = snext();
			} while (!isEndOfLine(c));
			return res.toString();
		}

		public boolean isSpaceChar(int c)
		{
			if (filter != null)
				return filter.isSpaceChar(c);
			return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
		}

		private boolean isEndOfLine(int c)
		{
			return c == '\n' || c == '\r' || c == -1;
		}

		public interface SpaceCharFilter
		{
			public boolean isSpaceChar(int ch);
		}

	}
}