import math
def correlation(l1, l2):
    min_lenght = min(len(l1), len(l2))
    sum1 = sum(l1[:min_lenght])
    sum2 = sum(l2[:min_lenght])
    sum1sq = sum(num ** 2 for num in l1)
    sum2sq = sum(num ** 2 for num in l2)
    sum12 = sum(x * y for x, y in zip(l1, l2))

    part1 = min_lenght * sum12 - sum1 * sum2
    part2 = math.sqrt((min_lenght * sum1sq - sum1 ** 2) * (min_lenght * sum2sq - sum2 ** 2))
    if part2 == 0: 
        print("Деление на ноль")
        return
    else:
        corr = part1 / part2
        return corr