### setZeroes 
from typing import *
def f_gold(matrix: List[List[int]]) -> None:
    """
    Do not return anything, modify matrix in-place instead.
    """
    m, n = len(matrix), len(matrix[0])
    zero_rows = [False] * m
    zero_cols = [False] * n
    for i in range(m):
        for j in range(n):
            if matrix[i][j] == 0:
                zero_rows[i] = zero_cols[j] = True
    for i in range(m):
        for j in range(n):
            if zero_rows[i] or zero_cols[j]:
                matrix[i][j] = 0