k=int(eval(input()))

if (k%2)==1 and k<=100:

    a=k//2

    b=k//2+1

elif (k%2)==0 and k<=100:

    a=k//2

    b=k//2

print((a*b))
K=int(eval(input()))

l=0

for i in range(1,K+1):

    for z in range(i,K+1):

        if (i%2==0 and z%2==1) or (i%2==1 and z%2==0):

            l+=1

print(l)

k = int(eval(input()))
if (k % 2) == 1 and k <= 100:
    a = k // 2
    b = k // 2 + 1
elif (k % 2) == 0 and k <= 100:
    a = k // 2
    b = k // 2
print((a * b))

K = int(eval(input()))
l = 0
for i in range(1, K + 1):
    for z in range(i, K + 1):
        if (i % 2 == 0 and z % 2 == 1) or (i % 2 == 1 and z % 2 == 0):
            l += 1
print(l)

-k = int(eval(input())) -if (k % 2) == 1 and k <= 100: -    a = k // 2 -    b = k // 2 + 1 -elif (k % 2) == 0 and k <= 100: -    a = k // 2 -    b = k // 2 -print((a * b)) +K = int(eval(input())) +l = 0 +for i in range(1, K + 1): +    for z in range(i, K + 1): +        if (i % 2 == 0 and z % 2 == 1) or (i % 2 == 1 and z % 2 == 0): +            l += 1 +print(l)