Prefix Sum Primes

A ac a day, keeps the doctor away!

Neko Performs Cat Furrier Transform

Someone asked me how good you are. I said how big the universe is, how good you are.

STL-bitset

These STL in c++ are so useful that you can sovle some problems easily through use them.I have known map,vector,queue,stack,set.And there is a STL named bitset.

White-book-example

I'm studing DFS these days,it's hard to understand.For this,i'd like to paste a easy question here to understand it more.

小y的序列

又是一道不涉及算法，偏重于思维的水题诶。妥妥的签到，虽然我也没有自己成功的做出来。

Expedition

最近学长开的算法课中了解到了优先队列，又正好在白书上看到一道可以用优先队列实现的题，磕了小半天，终于是在白书的帮助下AC啦。🌞

Gourmet Cat

昨晚cf的一道题，记录一下。

产生冠军

蒟蒻的HDU刷（shui）题之旅

咕咕的计数题 II

这是助我们拿银牌的一道题，自己都没有想到可以A了这道题，不过这道题还是思维更重要一些。

Childhood dream

昨天去郑轻打了CCPC的省赛，所幸被队友带飞拿了个银（队友是真的强。这题当时想都不敢想，最后听学长一说发现还挺简单的，补一下