#include <bits/stdc++.h>
using namespace std;
//UL, UR, R, LR, LL, L
int n,lx,ly,rx,ry;
int f[205][205];
int sp[40005],zl[40005],ans=10000000;
void dfs(int x,int y,int as){
	//cerr<<x<<" "<<y<<" "<<f[x][y]<<endl;
    if(x<0||x>=n||y<0||y>=n)return ;
	if(f[x][y]<=as)return ;
	f[x][y]=as;
    if(as>=ans)return ;
    if(x==rx&&y==ry){ans=as;for(int i=1;i<=ans;i++)sp[i]=zl[i];return ;}
    zl[as+1]=1;dfs(x-2,y-1,as+1);
    zl[as+1]=2;dfs(x-2,y+1,as+1);
    zl[as+1]=3;dfs(x,y+2,as+1);
    zl[as+1]=4;dfs(x+2,y+1,as+1);
    zl[as+1]=5;dfs(x+2,y-1,as+1);
    zl[as+1]=6;dfs(x,y-2,as+1);
    zl[as+1]=0;
}

int main() {
    scanf("%d%d%d%d%d",&n,&lx,&ly,&rx,&ry);
    for(int i=0;i<n;i++)for(int j=0;j<n;j++)f[i][j]=10000000;
    dfs(lx,ly,0);
    if(ans==10000000){puts("Impossible");return 0;}
    printf("%d\n",ans);
    for(int i=1;i<=ans;i++){
        if(sp[i]==1)printf("UL ");
        else if(sp[i]==2)printf("UR ");
        else if(sp[i]==3)printf("R ");
        else if(sp[i]==4)printf("LR ");
        else if(sp[i]==5)printf("LL ");
        else if(sp[i]==6)printf("L ");
    }
    return 0;
}