file = open('1A.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]) % 2 == 0:
            count += 1
print(count)

file = open('1B.txt')
B = list(map(int, file.readlines()))
k0, k1 = 0, 0
for i in range(len(B)):
    if B[i] % 2 == 0:
        k0 += 1
    else:
        k1 += 1
print((k0 * (k0 - 1) // 2) + (k1 * (k1 - 1) // 2))
#Проверка: в 13 и 14 строках B -> A