my_input = list(map(int, open("inputs/input_1", "r").readlines()))

p1 = sum(my_input)
p2 = sum(sorted(my_input)[:-20])


p3 = 0
rev = False
for x in my_input:
    if rev: x = -x
    p3 += x
    rev = not rev


print(p1)
print(p2)
print(p3)