with open('puzzle.txt', 'r') as f:
    lines = f.read().splitlines()

column_a = []
column_b = []

for line in lines:
    new_column_a, new_column_b = line.split('  ')
    column_a.append(new_column_a.strip())
    column_b.append(new_column_b.strip())

column_a.sort()
column_b.sort()

print(column_a)
print(column_b)

total_distance = 0

for i in range(len(column_a)):
    total_distance += abs(int(column_a[i]) - int(column_b[i]))

print(total_distance)