Cf:b. almost Terry matrix [symmetry + finding rules + structure + I am structural garbage]

analysis

Tend to symmetry , Because it is 2 Multiple , So consider basic units 2 * 2
1 0 | 0 1
0 1 | 1 0
ABA…
BAB…
…
We have defined two special 2 * 2 Of A and B
Then it can be constructed AB Staggered appearance , Conform to the first and second examples

ac code

import sys
input = sys.stdin.readline

for _ in range(int(input())):
    n, m = list(map(int, input().split()))
    # 1 0 | 0 1
    # 0 1 | 1 0
    # ABA...
    # BAB...
    # ...

    even = [1, 0, 0, 1]
    odd = [0, 1, 1, 0]

    ans = [[0] * m for _ in range(n)]
    for i in range(n):
        for j in range(m):
            if i % 4 == 0 or i % 4 == 3:
                ans[i][j] = even[j % 4]
            else:
                ans[i][j] = odd[j % 4]

    for row in ans:
        print(*row)

summary

I'm construction garbage
I'm looking for regular little garbage