a = list(map(int, input().split()[:24]))

litre_92_price = 0
litre_95_price = 0

for i in range(1, 12, 2):
    litre_92_price += a[i] / a[i - 1]

for i in range(12, 24, 2):
    litre_95_price += a[i] / a[i - 1]

litre_92_price /= 6
litre_95_price /= 6

print(litre_92_price)
print(litre_95_price)