摘要：
Decoding Morse Sequences 题目链接： http://acm.hust.edu.cn/vjudge/contest/129783 problem/D Description Before the digital age, the most common "binary" cod 阅读全文
摘要：
Fill the Cisterns! 题目链接： http://acm.hust.edu.cn/vjudge/contest/129783 problem/F Description During the next century certain regions on earth will expe 阅读全文