public class Beckett
{
public static void moves(int n, boolean forward)
{
if (n == 0) return;
moves(n-1, true);
if (forward) System.out.println("enter " + n);
else System.out.println("exit " + n);
moves(n-1, false);
}
public static void main(String[] args)
{
int N = Integer.parseInt(args[0]);
moves(N, true);
}
}
public class TowersOfHanoi
{
public static void moves(int n, boolean left)
{
if (n == 0) return;
moves(n-1, !left);
if (left) System.out.println(n + " left");
else System.out.println(n + " right");
moves(n-1, !left);
}
public static void main(String[] args)
{
int N = Integer.parseInt(args[0]);
moves(N, true);
}
}
public class Euclid
{
public static int gcd(int p, int q)
{
if (q == 0) return p;
else return gcd(q, p % q);
}
public static int gcd2(int p, int q)
{
while (q != 0)
{
int temp = q;
q = p % q;
p = temp;
}
return p;
}
public static void main(String[] args)
{
int p = Integer.parseInt(args[0]);
int q = Integer.parseInt(args[1]);
int d = gcd(p, q);
int d2 = gcd2(p, q);
System.out.println("gcd(" + p + ", " + q + ") = " + d);
System.out.println("gcd(" + p + ", " + q + ") = " + d2);
}
}