Задача 5

from random import randint

A =  [randint(1, 99) for i in range(26)]

print(A) #для проверки

count = 0

for i in range(len(A) // 2):
    #print(A[i],A[len(A) - 1 - i])
    if A[i] + A[len(A) - 1 - i] > 50:
        count += 1
print(count)