#include <bits/stdc++.h>
using namespace std;

#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define endl "\n"
#define int long long
#define ff first
#define ss second

#define trace1(x)                cerr<<#x<<": "<<x<<endl
#define trace2(x, y)             cerr<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define trace3(x, y, z)          cerr<<#x<<":" <<x<<" | "<<#y<<": "<<y<<" | "<<#z<<": "<<z<<endl

const int N=205;

int n, a, b, c, d;
int cache[N][N], cache2[N][N];
vector<string> output;

int dp(int x, int y)
{
	if(x<0||y<0||x>n||y>n)
		return 0;
	if(x==c&&y==d)
		return 1;
	if(cache[x][y]!=-1)
	{
		return cache[x][y];
	}
	int &ans=cache[x][y];
	ans=0;
	ans|=dp(x-2, y-1);
	ans|=dp(x-2, y+1);
	ans|=dp(x, y+2);
	ans|=dp(x+2, y+1);
	ans|=dp(x+2, y-1);
	ans|=dp(x, y-2);
	return ans;
}

int dp2(int x, int y)
{
	if(x<0||y<0||x>n||y>n)
		return 1e9;
	if(x==c&&y==d)
		return 0;
	if(cache2[x][y]!=-1)
	{
		return cache2[x][y];
	}
	int &ans=cache2[x][y];
	ans=1e9;
	ans=min(ans, 1+dp2(x-2, y-1));
	ans=min(ans, 1+dp2(x-2, y+1));
	ans=min(ans, 1+dp2(x, y+2));
	ans=min(ans, 1+dp2(x+2, y+1));
	ans=min(ans, 1+dp2(x+2, y-1));
	ans=min(ans, 1+dp2(x, y-2));
	return ans;
}

void path(int x, int y)
{
	if(x<0||y<0||x>n||y>n)
		return;
	if(x==c&&y==d)
		return;
	int ans=cache2[x][y];
	if(1+dp2(x-2, y-1)==ans)
	{
		output.push_back("UL");
		path(x-2, y-1);
		return;
	}
	if(1+dp2(x-2, y+1)==ans)
	{
		output.push_back("UR");
		path(x-2, y+1);
		return;
	}
	if(1+dp2(x, y+2)==ans)
	{
		output.push_back("R");
		path(x, y+2);
		return;
	}
	if(1+dp2(x+2, y+1)==ans)
	{
		output.push_back("LR");
		path(x+2, y+1);
		return;
	}
	if(1+dp2(x+2, y-1)==ans)
	{
		output.push_back("LL");
		path(x+2, y-1);
		return;
	}
	if(1+dp2(x, y-2)==ans)
	{
		output.push_back("L");
		path(x, y-2);
		return;
	}
}

int32_t main()
{
	IOS;
	memset(cache, -1, sizeof(cache));
	memset(cache2, -1, sizeof(cache2));
	cin>>n>>a>>b>>c>>d;
	if(!dp(a,b))
	{
		cout<<"Impossible";
		return 0;
	}
	dp2(a, b);
	path(a, b);
	cout<<output.size()<<endl;
	for(auto it:output)
	{
		cout<<it<<" ";
	}
   	return 0;
}