Problem: You are given a matrix a consisting of positive integers. It has n rows and m columns.

Construct a matrix b consisting of positive integers. It should have the same size as a, and the following conditions should be met: 

  * 1 ≤ b_{i,j} ≤ 10^6; 
  * b_{i,j} is a multiple of a_{i,j}; 
  * the absolute value of the difference between numbers in any adjacent pair of cells (two cells that share the same side) in b is equal to k^4 for some integer k ≥ 1 (k is not necessarily the same for all pairs, it is own for each pair). 



We can show that the answer always exists.

Input

The first line contains two integers n and m (2 ≤ n,m ≤ 500).

Each of the following n lines contains m integers. The j-th integer in the i-th line is a_{i,j} (1 ≤ a_{i,j} ≤ 16).

Output

The output should contain n lines each containing m integers. The j-th integer in the i-th line should be b_{i,j}.

Examples

Input


2 2
1 2
2 3


Output


1 2
2 3


Input


2 3
16 16 16
16 16 16


Output


16 32 48
32 48 64


Input


2 2
3 11
12 8


Output


327 583
408 664

Note

In the first example, the matrix a can be used as the matrix b, because the absolute value of the difference between numbers in any adjacent pair of cells is 1 = 1^4.

In the third example: 

  * 327 is a multiple of 3, 583 is a multiple of 11, 408 is a multiple of 12, 664 is a multiple of 8; 
  * |408 - 327| = 3^4, |583 - 327| = 4^4, |664 - 408| = 4^4, |664 - 583| = 3^4. 

Solution (in PYTHON3):

Solution:
import math
import sys
input = iter(sys.stdin.read().splitlines()).__next__


# from functools import reduce
# lcm_1_16 = reduce(lambda a, b: a*b//math.gcd(a, b), range(1, 17))
# print(lcm_1_16)  # 720720


# checkerboard it and make everything either 720720 or 720720-a_i_j**4
LCM = 720720
memo = [LCM - i**4 for i in range(17)]

n, m = map(int, input().split())
a = [list(map(int, input().split())) for _ in range(n)]
b = [[] for _ in range(n)]
for i in range(n):
    for j in range(m):
        if (i + j) % 2:
            b[i].append(LCM)
        else:
            b[i].append(memo[a[i][j]])
for row in b:
    print(*row)