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:
from sys import stdin, stdout
import sys

# 2 2
#  3  11
# 12   8
def multiples_and_power_differences(n, m, b_a):
    # r = 1
    # for i in range(2, 17):
    #    r = lcm(r, i)
    r = 720720

    for i in range(n):
        for j in range(m):
            if (i+j)%2 == 0:
                b_a[i][j] = r
            else:
                b_a[i][j] = r - (b_a[i][j]**4)


def lcm(a, b):
    g = gcd(a, b)
    return a*b//g


def gcd(a, b):
    if b == 0:
        return a
    return gcd(b, a%b)


try:
    n, m = map(int, stdin.readline().split())
    b_a = []
    for _ in range(n):
        b_a.append(list(map(int, stdin.readline().split())))
    multiples_and_power_differences(n, m, b_a)
    for b in b_a:
        stdout.write(' '.join(map(str, b)) + '\n')
except:
    print(sys.exc_info())