a = [
    [0, 2, 3, 4],
    [0, 2, 3, 4],
    [1, 0, 3, 4],
    [1, 2, 0, 4],
]

for j in range(len(a[0])):
    r = 0
    for i in range(len(a)):
        if a[i][j] == 0:
            r = r + 1
    print(r)