2020年2月11日
Petr and a Combination Lock
摘要： Petr has just bought a new car. He's just arrived at the most known Petersburg's petrol station to refuel it when he suddenly discovered that the petr 阅读全文
posted @ 2020-02-11 23:33 DeaL57 阅读(233) 评论(0) 推荐(0)
433B.Kuriyama Mirai's Stones
摘要： Kuriyama Mirai has killed many monsters and got many (namely n) stones. She numbers the stones from 1 to n. The cost of the i-th stone is vi. Kuriyama 阅读全文
posted @ 2020-02-11 17:27 DeaL57 阅读(226) 评论(0) 推荐(0)