摘要：
http://poj.org/problem?id=2828Buy TicketsTime Limit:4000MSMemory Limit:65536KTotal Submissions:10478Accepted:5079DescriptionRailway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue…The Lunar New Year was approaching, but unluckily the Li 阅读全文
摘要：
http://acm.hdu.edu.cn/showproblem.php?pid=1540Tunnel WarfareTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3168 Accepted Submission(s): 1216 Problem DescriptionDuring the War of Resistance Against Japan, tunnel warfare was carried out extensivel 阅读全文