摘要：
Magic Pen 6Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 217Accepted Submission(s): 108 Problem DescriptionIn HIT, many people have a magic pen. Lilu0355 has a magic pen, darkgt has a magic pen, discover has a magic pen. Recently, Timer also got 阅读全文
摘要：
Smallest DifferenceTime Limit:1000MSMemory Limit:65536KTotal Submissions:2669Accepted:763DescriptionGiven a number of distinct decimal digits, you can form one integer by choosing a non-empty subset of these digits and writing them in some order. The remaining digits can be written down in some orde 阅读全文
摘要：
Red and BlackTime Limit:1000MSMemory Limit:30000KTotal Submissions:19254Accepted:10252DescriptionThere is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can' 阅读全文