Ruudukko

t = int(input())

def ratko(n: int, m: int) -> list[list[int]]:
    tulos = [list() for x in range(m)]
    c = 1
    for i in range(n):
        for j in range(m):
            tulos[j].append(c)
            c += 1
    for x in range(m):
        if x % 2 == 1:
            tulos[x] = tulos[x][-1:] + tulos[x][0:-1]

    return tulos


swappi = False

while t > 0:
    t -= 1
    n, m = [int(x) for x in input().split()]
    if n > m:
        swappi = True
        n, m = m, n

    if (n, m) in {(1, 2), (1, 3), (2, 2)}:
        print("NO")
        continue
    print("YES")
    # yhden rivin speciaali
    if n == 1:
        lista = [str(v) for v in list(range(2, m + 1, 2)) + list(range(1, m + 1, 2))]
        if swappi:
            for x in lista:
                print(x)
        else:
            print(" ".join(lista))

        continue

    tulos = ratko(n, m)
    if not swappi:
        for x in range(n):
            rivi = ""
            for y in range(m):
                rivi += str(tulos[y][x]) + " "
            print(rivi.strip())
    else:
        for y in range(m):
            rivi = ""
            for x in range(n):
                rivi += str(tulos[y][x]) + " "
            print(rivi.strip())

Test 1

Verdict: WRONG ANSWER