摘要：
题目链接：http://codeforces.com/gym/100889/problem/B B. Backward and Forward time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output An array is called a 'Mirror'... 阅读全文
摘要：
夹角有多大(题目已修改,注意读题)Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 25012 Accepted Submission(s): 9761 Problem Description 时间过的好快，一个学期就这么的过去了，xh... 阅读全文