def solution(sizes):
max_size = []
min_size = []
for size in sizes:
if size[0] >= size[1]:
max_size.append(size[0])
min_size.append(size[1])
else:
max_size.append(size[1])
min_size.append(size[0])
answer = max(max_size) * max(min_size)
return answer