26(18) РТ

f = open(r'C:\Users\SnowDrit\Downloads\26(1)\26.18.txt')  # на 2 балла
n = int(f.readline())
tovari = []
for s in f:
    tovari.append(int(s))
tovari.sort(reverse=True)
skidka_pokupatel = sum(tovari[:n//4])* 0.5
tovari.sort()
skifka_magaz = sum(tovari[:n//4]) * 0.5
print(sum(tovari) - skidka_pokupatel)
print(sum(tovari) - skifka_magaz)