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Works for code too

import math

def multiply_bad(a:int, b:int) -> int:
    return a*b

def multiply_better(a:int, b:int) -> int:
    return (-1 if a<0 else 1)*(-1 if b<0 else 1)*int(math.sqrt(a*a*b*b))

def multiply_perfect(a:int, b:int) -> int:
    product = 0
    negative = False
    if a < 0:
        a = -1*a
        negative = not negative
    if b < 0:
        b = -1*b
        negative = not negative
    for i in range(a):
        for j in range(b):
            product += 1
    if negative:
         return -1*product
    return product