Problem: Rani has challenged Nandu to generate Splendid Matrices. Splendid matrices are square matrices with dimensions 2^n X 2^n filled in a particular manner. To explain this manner, Rani gives Nandu the matrices for n=1, n=2 and n=3 : 

n=1
1 2
3 4

n=2 (spacing for clarity)
1  2  5  6
3  4  7  8
9  10 13 14
11 12 15 16

n=3 (spacing for clarity)
1  2  5  6  17 18 21 22 
3  4  7  8  19 20 23 24 
9  10 13 14 25 26 29 30 
11 12 15 16 27 28 31 32 
33 34 37 38 49 50 53 54 
35 36 39 40 51 52 55 56 
41 42 45 46 57 58 61 62 
43 44 47 48 59 60 63 64

Given n, please help Nandu in generating the Splendid Matrix with dimensions 2^n X 2^n.
Input
A single line consisting of n.
Output
n lines. Each line should consist of n integers separated by single spaces.
Constraints
1 < = n < = 10

SAMPLE INPUT
3

SAMPLE OUTPUT
1 2 5 6 17 18 21 22 
3 4 7 8 19 20 23 24 
9 10 13 14 25 26 29 30 
11 12 15 16 27 28 31 32 
33 34 37 38 49 50 53 54 
35 36 39 40 51 52 55 56 
41 42 45 46 57 58 61 62 
43 44 47 48 59 60 63 64

Solution (in PYTHON):

Solution:
# Splendid Matrices
matrix=[[0 for x in range(1024)] for x in range(1024)]
 
def splendid(n,s,a,b):
    if n>1:
        p=(2**(n-1))*(2**(n-1))
        k=(2**n)/2;
        splendid(n-1,s,a,b)
        splendid(n-1,s+p,a,b+k)
        splendid(n-1,s+p*2,a+k,b)
        splendid(n-1,s+p*3,a+k,b+k)
 
    elif n==1:
        matrix[a][b] = s
        matrix[a][b+1]=s+1
        matrix[a+1][b]=s+2
        matrix[a+1][b+1]=s+3

if __name__=='__main__':
    n=int(raw_input())
    N=2**n
    splendid(n,1,0,0)
     
     
    #Printing the Matrix
    for i in range(0,2**n):
            for j in range(0,2**n):
                    print matrix[i][j],
            print