2009ACM多校联合暑期集训12解题报告感谢各校的努力 2009 ACM Multi-School Joint Summer Training (12) Problem Solving Report Thanks to the efforts of the schools
2009ACM多校联合暑期集训17解题报告感谢各校的努力 2009 ACM Multi-School Joint Summer Training (17) Problem Solving Report Thanks to the efforts of the schools