原创 樹狀數組小結
雖然線段樹可以完美的代替樹狀數組，但是因爲代碼的簡潔性，還是忍不住去學了樹狀數組。。。。 void add(ll *s, ll x,int n,ll v){ for(;x<=n;s[x]+=v,x+=(x&-x)); } ll
2018-09-06 00:03:28
原创 Gym - 101020H Weekend
You and your friends are going to camping next weekend , because you are the best driver and you are living in this tow
2018-09-06 00:03:27
原创 Mondriaan's Dream ZOJ - 1100
題意：給你一個n*m的矩陣，讓你用1*2（2*1）的小矩陣去填充它，問有多少種方案。 這題，也是看了別人的博客纔有了思路，不過大神們的推導我死活沒看懂，， 我的想法是，設初始狀態爲空（第0行爲滿），末狀態爲滿，一行一行的枚舉所有狀態（所有
2018-09-06 00:03:27
原创 HDU - 2586 How far away ？ (Lca)
There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like
2018-09-06 00:03:27
原创 C - The Battle of Chibi
Cao Cao made up a big army and was going to invade the whole South China. Yu Zhou was worried about it. He thought the
2018-09-06 00:03:27
原创 B - Dining （最大流）
Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. F
2018-09-06 00:03:26