Задача 1

from random import randint

A =  [randint(-100, 100) for i in range(25)]

print(A) #для проверки

countP = 0
countN = 0
countMaxP = 0
countMaxN = 0
i = 0
for i in range(len(A)):
    if A[i] > 0:
        countP += 1
        if countMaxN < countN:
            countMaxN = countN
        countN = 0
    elif A[i] < 0:
        if countMaxP < countP:
            countMaxP = countP
        countP = 0
        countN += 1
    elif A[i] == 0:
        if countMaxN < countN:
            countMaxN = countN
        if countMaxP < countP:
            countMaxP = countP
        countP = 0
        countN = 0
print(max(countMaxN, countMaxP))