张蔡辉

When register on a social network, you are always asked to specify your hobbies in order to find some potential friends with the same hobbies. Asocial clusteris a set of people who have some of thei...

Some scientists took pictures of thousands of birds in a forest. Assume that all the birds appear in the same picture belong to the same tree. You are supposed to help the scientists to count the maxi...

This time, you are supposed to help us collect the data for family-owned property. Given each person's family members, and the estate（房产）info under his/her own name, we need to know the size of each f...