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mac 终端查看端口命令
查看 端口所在线程 lsof -i:81COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEjava 1867 pengxuan 189u IPv6 0x3a47bb02362d2d59 0t0 TCP *:hosts2-ns (LISTEN)java 1867 pengxuan 196u IPv6 0xA + B for you again（最长公共前缀和后缀）HDU - 1867
Generally speaking, there are a lot of problems about strings processing. Now you encounter another such problem. If you get two strings, such as “asdf” and “sdfg”, the result of the addition between them is “asdfg”, for “sdf” is the tail substBZOJ 1867 [Noi1999]钉子和小球 DP
想状态和钉子的位置如何匹配想了半天。。。后来发现不是一样的吗$qwq$ 思路：当然是$DP$啦 提交：>5次（以为无故$RE$，实则是先乘后除爆了$long\space long$） 题解： 若有钉子，左右各乘$\frac{1}{2}$转移，否则，向下两层直接转移。 对于分数，分别维护分子和分母，然后加起来的时候，记着一定要写成