第一场： A. Maximum Multiple B. Balanced Sequence C. Triangle Partition D. Distinct Values E. Maximum Weighted Matching F. Period Sequence G. Chiaki Sequence Revisited H. RMQ Similar Sequence I. Lyndon Substring J. Turn Off The Light K. Time Zone 第二场 A. Absolute B. Counting Permutations C. Cover D. Game E. Hack It F. Matrix G….
开坑了
以后博客就放这里了。（终于有钱买学生服务器了） 测试一下公式：$$\sum_{i=1}^n{i^2} = \frac{n(n+1)(2n+1)}{6}$$