import java.util.ArrayList;
import java.util.Scanner;

public class Knight
{
    int board[][];
    
    private class Loc
    {
	int x;
	int y;
	public Loc(int xx, int yy)
	{
	    this.x=xx;
	    this.y=yy;
	}
	public Loc newLoc(Loc add)
	{
	    Loc nn = new Loc(x, y);
	    nn.x+=add.x;
	    nn.y+=add.y;
	    return nn;
	}
	public boolean onboard()
	{
	    return x>=0 && x<8 && y>=0 && y<8;
	}
	public String toString()
	{
	    return "<"+x+","+y+">";
	}
	public boolean equals(Loc l)
	{
	    return l.x==x && l.y==y;
	}
    }
    
    private ArrayList<Loc> kmoves; 	
    public Knight()
    {
	board = new int[8][8];
	// Changed here from that showin in class, the inclass version set all board positions to 99999.
	for (int i=0; i<8; i++)
	    for (int j=0; j<8; j++)
		board[i][j]=0;
	kmoves = new ArrayList<>();
	kmoves.add(new Loc(2,1));
	kmoves.add(new Loc(2,-1));
	kmoves.add(new Loc(1,2));
	kmoves.add(new Loc(1,-2));
	
	kmoves.add(new Loc(-2,1));
	kmoves.add(new Loc(-2,-1));
	kmoves.add(new Loc(-1,2));
	kmoves.add(new Loc(-1,-2));	
    }
    
    public boolean moveknight(Loc c, Loc target, int remaining)
    {
	System.out.println("Considering " + c);
	if (remaining<=0)
	    return false;
	for (Loc km : kmoves)
	{
	    Loc nn = c.newLoc(km);
	    if (nn.equals(target))
	    {
		System.out.println("Got to " + target + " via " + c + " with " + (remaining-1) + " move remaining");
		return true;
	    }
	    // Note I fixed this from what I dscussed in class where I mumbled about possibly needing to subtract
	    if (nn.onboard() && board[nn.x][nn.y]<remaining)
	    {
		board[nn.x][nn.y]=remaining;
		if(moveknight(nn, target, remaining-1))
		    return true;
	    }
	}
	return false;
    }
    public void tryy()
    {	
	Scanner scanner = new Scanner(System.in);
	System.out.println("Start row:");
	int sr = scanner.nextInt();
	System.out.println("Start col:");
	int sc = scanner.nextInt();
	System.out.println("Target row:");
	int er = scanner.nextInt();
	System.out.println("Target col:");
	int ec = scanner.nextInt();
	System.out.println("Max Moves:");
	int mv = scanner.nextInt();
	
	
	System.out.println(moveknight(new Loc(sr, sc), new Loc(er, ec), mv));	

    }
    public static void main(String[] args)
    {
	Knight k = new Knight();
	k.tryy();
    }
}