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Polycarp has interviewed Oleg and has written the interview down without punctuation marks and spaces to save time. Thus, the interview is now a strin 阅读全文
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Vasily has a number a, which he wants to turn into a number b. For this purpose, he can do two types of operations: multiply the current number by 2 ( 阅读全文
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Demy has n jewels. Each of her jewels has some value vi and weight wi. Since her husband John got broke after recent financial crises, Demy has decide 阅读全文
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Farmer John has built a new long barn, with N (2 include using namespace std; const int INF=1e9+5,maxn=1e5+5; int n,k; int a[maxn]; bool check(int x) 阅读全文
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Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised to organize 阅读全文
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The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all pl 阅读全文
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Even if the world is full of counterfeits, I still regard it as wonderful. Pile up herbs and incense, and arise again from the flames and ashes of its 阅读全文
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Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new probl 阅读全文
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Problem Description 度熊手上有一本神奇的字典，你可以在它里面做如下三个操作： 1、insert : 往神奇字典中插入一个单词 2、delete: 在神奇字典中删除所有前缀等于给定字符串的单词 3、search: 查询是否在神奇字典中有一个字符串的前缀等于给定的字符串 Input 阅读全文
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C. Bus time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output A bus moves along the coordinate line 阅读全文