2017年7月20日
dp的两个不错的题
摘要： C - Cheapest Palindrome Keeping track of all the cows can be a tricky task so Farmer John has installed a system to automate it. He has installed on e 阅读全文
posted @ 2017-07-20 21:17 暴力都不会的蒟蒻 阅读(363) 评论(0) 推荐(0) 编辑