原创 E - E.龍皇異次元 （POJ-3723）（最大生成樹）
Windy has a country, and he wants to build an army to protect his country. He has picked up N girls and M boys and want
2020-04-24 10:34:13
原创 Halloween treats （POJ-3370）（抽屜原理）
Every year there is the same problem at Halloween: Each neighbour is only willing to give a certain total number of swe
2020-04-22 07:41:56
原创 Find a multiple （POJ-2356）（抽屜原理）
The input contains N natural (i.e. positive integer) numbers ( N <= 10000 ). Each of that numbers is not greater than 1
2020-04-22 07:41:56
原创 Complete the sequence! （POJ-1398）（差分法）
You probably know those quizzes in Sunday magazines: given the sequence 1, 2, 3, 4, 5, what is the next number? Sometim
2020-04-22 07:41:56
原创 Chocolate （POJ-1322）（概率DP）
In 2100, ACM chocolate will be one of the favorite foods in the world. "Green, orange, brown, red...", colorful sugar-c
2020-04-22 07:41:56
原创 Smith Numbers （POJ-1142）（素數判定+整數分解）
While skimming his phone directory in 1982, Albert Wilansky, a mathematician of Lehigh University,noticed that the tele
2020-04-22 07:41:56
原创 Web Navigation （POJ-1028）（堆棧）
Standard web browsers contain features to move backward and forward among the pages recently visited. One way to implem
2020-04-22 07:41:56
原创 C-Super Star （POJ-2069）（最小球覆蓋+模擬退火）
During a voyage of the starship Hakodate-maru (see Problem 1406), researchers found strange synchronized movements of s
2020-04-19 16:43:53
原创 Square Coins （HDU-1398）（母函數）
People in Silverland use square coins. Not only they have square shapes but also their values are square numbers. Coins
2020-04-19 16:43:53
原创 找單詞 （HDU-2082）（母函數）
假設有x1個字母A， x2個字母B,..... x26個字母Z，同時假設字母A的價值爲1，字母B的價值爲2,..... 字母Z的價值爲26。那麼，對於給定的字母，可以找到多少價值<=50的單詞呢？單詞的價值就是組成一個單詞的所有字母的價值
2020-04-19 16:43:53
原创 H - Is It A Tree? （POJ-1308）（HDU-1325）（並查集）
A tree is a well-known data structure that is either empty (null, void, nothing) or is a set of one or more nodes conne
2020-04-19 16:43:53
原创 Happy 2006 （POJ-2773）（容斥原理+二分）
Two positive integers are said to be relatively prime to each other if the Great Common Divisor (GCD) is 1. For instanc
2020-04-19 16:43:53
原创 Big Event in HDU （HDU-1171）（母函數）
Nowadays, we all know that Computer College is the biggest department in HDU. But, maybe you don't know that Computer C
2020-04-19 16:43:53
原创 Crisis of HDU （HDU-2110）（母函數）
話說上回講到HDU大戰東洋小苟，結果自然是中方大勝，這一戰也使得海東集團在全球同行業中的地位更加鞏固。隨着集團的發展，很多創業時期的元老逐步功成身退，先是8600移民海外，然後是linle夫婦退隱山林，逐漸的，最初衆多的元老只剩下XHD夫
2020-04-19 16:43:53
原创 母函數（對於初學者的最容易理解的）
普通母函數： 在用到母函數之前啊，恐怕很少有人聽過母函數，我也一樣，我當時是做杭電acm的2082題要用母函數做纔去瞭解母函數的。當然母函數分爲很多種，包括普通母函數、指數母函數、L級數、貝爾級數和狄利克雷級數，我這裏說的都是普通母函數。
2020-04-19 16:43:53