2014年5月2日
CodeForces 383D Antimatter
摘要： Iahub accidentally discovered a secret lab. He found there n devices ordered in a line, numbered from 1 to n from left to right. Each device i (1 ≤ i ... 阅读全文
posted @ 2014-05-02 10:45 acvc 阅读(301) 评论(0) 推荐(0) 编辑