k=int(eval(input()))

count=0

for i in range (2,k+1,1):

    for j in range (k+1):

        if i%2==0 and j%2==1:

            count+=1



print(count)
n=eval(input())

O=0

E=0

for i in range (0,int(n)):

    if i%2==0 :

        E+=1

    else:

        O+=1

print((O*E))
k = int(eval(input()))
count = 0
for i in range(2, k + 1, 1):
    for j in range(k + 1):
        if i % 2 == 0 and j % 2 == 1:
            count += 1
print(count)

n = eval(input())
O = 0
E = 0
for i in range(0, int(n)):
    if i % 2 == 0:
        E += 1
    else:
        O += 1
print((O * E))

-k = int(eval(input())) -count = 0 -for i in range(2, k + 1, 1): -    for j in range(k + 1): -        if i % 2 == 0 and j % 2 == 1: -            count += 1 -print(count) +n = eval(input()) +O = 0 +E = 0 +for i in range(0, int(n)): +    if i % 2 == 0: +        E += 1 +    else: +        O += 1 +print((O * E))