from fileio import open
let f = open('test/day1.in','r')
let lines = [int(x) for x in f.readlines()]
f.close()

# Make a bad set
let data = set(lines)

for line in lines:
    if (2020 - line) in data:
        print(line, 2020 - line, line * (2020 - line))

def sums_index(lines, ind):
    let out = []
    for line in lines[:ind]:
        out.append(line + lines[ind])
    for line in lines[ind:]:
        out.append(line + lines[ind])
    return out

for ind in range(len(lines)):
    for s in sums_index(lines, ind):
        if (2020 - s) in lines:
            print(((s - lines[ind]) * lines[ind]) * (2020 -s))