file = open('8A.txt')
A = list(map(int, file.readlines()))
count = 0
for i in range(len(A)):
    for j in range(i + 1, len(A)):
        if (A[i] + A[j]) % 80 == 0 and (A[i] > 50000 or A[j] > 50000):
            count += 1
print(count)

file = open('8B.txt')
A = list(map(int, file.readlines()))
k = [0] * 80
kb = [0] * 80
for i in range(len(A)):
    ost = A[i] % 80
    if A[i] <= 50000:
        k[ost] += 1
    else:
        kb[ost] += 1
print(k, kb)
count = k[0] * kb[0] + (kb[0] * (kb[0] - 1) // 2 )
for i in range(1, 80):
    count += ((k[i] * kb[80 - i]) + (kb[i] * (kb[i] - 1) // 2))
print(count - 1)
#Проверка: в строке 11 A -> B