def calc_areas_list(lines):
    areas = []
    for i, line in enumerate(lines):
        x1, y1 = map(int, line.strip().split(","))
        for j, other_line in enumerate(lines):
            if j >= i:
                continue
            x2, y2 = map(int, other_line.strip().split(","))
            area = (abs(x2 - x1) + 1) * (abs(y2 - y1) + 1)
            areas.append((i, j, area))
    return areas
                

with open("input.txt", "r") as file:
    lines = file.readlines()
    areas = calc_areas_list(lines)
    largest_area = max(areas, key=lambda x: x[2]) if areas else 0
    print(f"Largest area: {largest_area[2]}, V1: {lines[largest_area[0]].strip()} V2: {lines[largest_area[1]].strip()}")