import itertools
with open('data/sample.txt') as f:
    data = list(map(int,f.readlines()))

for x, y in itertools.combinations(data, 2):
    if x+y == 2020:
        print(x*y)
with open('data/data.txt') as f:
    data = list(map(int,f.readlines()))

for x, y, z in itertools.combinations(data, 3):
    if x+y+z == 2020:
        print(x*y*z)