摘要：
G: Give Candies 题目描述 There are N children in kindergarten. Miss Li bought them N candies。To make the process more interesting, Miss Li comes up with t 阅读全文
摘要：
B: Mathematical Curse 题目描述 A prince of the Science Continent was imprisoned in a castle because of his contempt for mathematics when he was young, and 阅读全文