items = [int(x.strip()) for x in open("input.txt")]

lows = []
highs = []

for item in items:
    if item < 1010:
        lows.append(item)
    else:
        highs.append(item)

print(lows)
print(highs)

for low in lows:
    for high in highs:
        if low + high == 2020:
            print("Found {} and {}: Sum={} Product={}".format(low, high, low+high, low*high))