2017年9月18日
Surprising Strings
摘要： Surprising Strings Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7403 Accepted: 4735 Description The D-pairs of a string of letters are the ordered pairs of letters that... 阅读全文
posted @ 2017-09-18 20:04 joeylee97 阅读(235) 评论(0) 推荐(0)