I think this problem is unsolvable, because it takes 365 days for a person to build a house, and the efficiency is 1/365. Therefore, if the efficiency is the same, this problem can be done, and the time required by 365 people is the total workload1÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷÷2