原创 HDU 3915 Game(拆位，高斯消元）
Problem Description Mr.Frost is a child who is too simple, sometimes naive, always plays some simple but interestin
2020-06-17 12:46:56
原创 hihocoder 1103 Colorful Lecture Note(字符串處理）
Little Hi is writing an algorithm lecture note for Little Ho. To make the note more comprehensible, Little Hi tries to
2020-06-17 11:52:36
原创 Codeforces 548E Mike and Foam(容斥）
Mike is a bartender at Rico's bar. At Rico's, they put beer glasses in a special shelf. There are n kinds of bee
2020-06-17 11:52:36
原创 POJ 2774 Long Long Message（2.3 求兩個字符串的最長公共子串）
Description The little cat is majoring in physics in the capital of Byterland. A piece of sad news comes to him these
2020-06-17 11:52:36
原创 HDU 3221 Brute-force Algorithm(歐拉公式降冪）
Problem Description Professor Brute is not good at algorithm design. Once he was asked to solve a path finding proble
2020-06-17 11:52:36
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原创 HDU 4912 Paths on the tree(LCA+貪心）
Problem Description bobo has a tree, whose vertices are conveniently labeled by 1,2,…,n. There are m paths on the tre
2020-06-17 11:52:36
原创 POJ 3904 Sky Code（容斥）
Description Stancu likes space travels but he is a poor software developer and will never be able to buy his own space
2020-06-17 11:52:36
原创 TC 667 #DIV2
250 points: ou are given two distinct points A and B in the two-dimensional plane. Your task is to find any point C w
2020-06-17 11:52:36
原创 TC 668 #DIV2
250 points: You are going to send a message to your friend. The message is given as the stringmessage. To confuse po
2020-02-21 20:23:08
原创 HDU 4248 A Famous Stone Collector(組合計數）
Problem Description Mr. B loves to play with colorful stones. There are n colors of stones in his collection. Two sto
2020-02-21 20:23:07
原创 HDU 4407 Sum（容斥）
Description XXX is puzzled with the question below: 1, 2, 3, ..., n (1<=n<=400000) are placed in a line. There a
2020-02-21 20:23:07
原创 Light OJ 1382 The Queue(組合計數）
On some special occasions Nadia's company provide very special lunch for all employees of the company. Before the food
2020-02-21 20:23:07
原创 HDU 2256 Problem of Precision(矩陣快速冪）
Problem Description Input The first line of input gives the number of cases, T. T test cases follow, each on a
2020-02-21 20:23:07
原创 Light OJ 1095 Arrange the Numbers(計數）
Consider this sequence {1, 2, 3 ... N}, as an initial sequence of first N natural numbers. You can rearrange this seque
2020-02-21 20:23:07
原创 ZOJ 3547 The Boss on Mars（容斥）
On Mars, there is a huge company called ACM (A huge Company on Mars), and it’s owned by a younger boss. Due to no moons
2020-02-21 20:23:07