Lesson 77 Terrible toothache 词汇 appointment n. 预约 构成：point v. 指，指向 用法：point to + 人 / 物 　　　指着，指向…… 　　　point out 指出（问题） 相关：game point 局点 　　　match point 赛点 例句：不要指着我！ 　　　Don’t point to me! 　　　他指出了这个机器的问

B. Arpa’s obvious problem and Mehrdad’s terrible solution time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are some

B. Arpa’s obvious problem and Mehrdad’s terrible solution time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are some