with open('input.text', 'r') as file:
    data: list[str] = file.readlines()

total = 0
for line in data:
    l, w, h = [int(s) for s in line.split('x')]

    sides = [2*l*w, 2*w*h, 2*h*l]

    area = 0
    lowest = float('inf')
    for side in sides:
        if side/2 < lowest:
            lowest = side/2
        area += side

    total += area + lowest

print(f'The total square feet of wrapping paper needed is {int(total)} sq. ft.')