num = int(eval(input()))



even_count = num // 2



if num % 2 == 0:

    odd_count = even_count

else:

    odd_count = even_count + 1



print((odd_count * even_count))

k = int(eval(input()))



if k % 2 == 0:

    print(((k // 2) ** 2))

else:

    print(((k // 2 + 1) * (k // 2)))

num = int(eval(input()))
even_count = num // 2
if num % 2 == 0:
    odd_count = even_count
else:
    odd_count = even_count + 1
print((odd_count * even_count))

k = int(eval(input()))
if k % 2 == 0:
    print(((k // 2) ** 2))
else:
    print(((k // 2 + 1) * (k // 2)))

-num = int(eval(input())) -even_count = num // 2 -if num % 2 == 0: -    odd_count = even_count +k = int(eval(input())) +if k % 2 == 0: +    print(((k // 2) ** 2)) -    odd_count = even_count + 1 -print((odd_count * even_count)) +    print(((k // 2 + 1) * (k // 2)))