/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
 
	int helper(int[][] table, int i, int j) {
        if ( i < 0 || j < 0 || i >= 4 || j >= 4 ) return 0;
        if ( table[i][j] == 1 ) return 0;
        if ( i == 3 && j == 3 ) return 1;
 
        table[i][j] = 1;
        return helper(table, i, j+1) + helper(table, i+1, j) + helper(table, i, j-1) + helper(table, i-1, j);
    }
 
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		int[][] table=new int[4][4];
        for(int i=0; i<4; i++)
            for(int j=0; j<4; j++) table[i][j]=0;
        System.out.println(new Ideone().helper(table,0,0));
	}
}