摘要：
题目链接 Bridges 题目描述 An edge in an undirected graph is a bridgeif after removing it the graph will be disconnected. Given an undirected connected graph, 阅读全文
摘要：
题目链接 MEX Queries 题目描述 You are given a set of integer numbers, initially it is empty. You should perform \(n\) queries. There are three different types 阅读全文
摘要：
题目链接 Intervals 题目描述 You are given \(n\) closed, integer intervals \([a_i,b_i]\) and \(n\) integers \(c_1\), ...,\(c_n\). Write a program that: reads t 阅读全文
摘要：
题目链接 Sightseeing trip 题目描述 There is a travel agency in Adelton town on Zanzibar island. It has decided to offer its clients, besides many other attrac 阅读全文
摘要：
题目链接 Non-trivial Common Divisor 题目描述 You are given a positive integer sequence \(A\) of length \(N\). You can remove any numbers from the sequence to 阅读全文
摘要：
题目链接 Patches 题目描述 Carlos is very concerned with the environment. Whenever possible, he tries to use less pollutingmeans of transport. He recently got 阅读全文
摘要：
题目链接 Naptime 题目描述 Goneril is a very sleep-deprived cow. Her day is partitioned into \(N\) ($3 \le N \le 3,830$) equal time periods but she can spend o 阅读全文
摘要：
题目链接 Choosing Capital for Treeland 题目描述 The country Treeland consists of n cities, some pairs of them are connected with unidirectional roads. Overall 阅读全文
摘要：
题目链接 Binary Apple Tree 题目描述 Let's imagine how apple tree looks in binary computer world. You're right, it looks just like a binary tree, i.e. any bipa 阅读全文
摘要：
题目链接 Anniversary Party 题目背景 The president of the Ural State University is going to make an 80'th Anniversary party. The university has a hierarchical 阅读全文
摘要：
题目链接 Longge's problem 题目描述 Longge is good at mathematics and he likes to think about hard mathematical problems which will be solved by some graceful 阅读全文
摘要：
题目链接 Farey Sequence 题目描述 The Farey Sequence Fn for any integer \(n\) with \(n \ge 2\) is the set of irreducible rational numbers \(a/b\) with $0 < a < 阅读全文
摘要：
题目链接 How many ways?? 题目描述 春天到了, HDU校园里开满了花, 姹紫嫣红, 非常美丽. 葱头是个爱花的人, 看着校花校草竞相开放, 漫步校园, 心情也变得舒畅. 为了多看看这迷人的校园, 葱头决定, 每次上课都走不同的路线去教室, 但是由于时间问题, 每次只能经过$k$个地方 阅读全文
摘要：
题目链接 随机数生成器 题目描述 栋栋最近迷上了随机算法，而随机数生成是随机算法的基础。栋栋准备使用线性同余法（Linear Congruential Method）来生成一个随机数列，这种方法需要设置四个非负整数参数$m$，\(a\)，\(c\)，\(X_0\)，按照下面的公式生成出一系列随机数 阅读全文
摘要：
题目链接 Another kind of Fibonacci 题目描述 As we all known , the Fibonacci series : \(F\)($0$)\(=1\),\(F\)($1$)\(=1\),\(F\)(\(N\))\(=F\)(\(N-1\))\(+F\)(\(N-2 阅读全文
摘要：
题目链接 Queuing 题目描述 Queues and Priority Queues are data structures which are known to most computer scientists. The Queue occurs often in our daily life 阅读全文
摘要：
题目链接 A Simple Math Problem 题目描述 Lele now is thinking about a simple function f(x). If x < 10 f(x) = x. If x >= 10 f(x) = a0$\(f(x-1)+a1\)\(f(x-2)+a2\) 阅读全文
摘要：
题目链接 Tr A 题目描述 $A$为一个方阵，则$Tr\ A$表示$A$的迹（就是主对角线上各项的和），现要求$Tr$(\(A^k\))\(\%9973\)。 输入格式 数据的第一行是一个$T$，表示有$T$组数据。 每组数据的第一行有$n$($2 \le n \le 10$)和$k$($2 \l 阅读全文
摘要：
题目链接 排列组合 题目描述 有$n$种物品，并且知道每种物品的数量。要求从中选出$m$件物品的排列数。例如有两种物品A,B，并且数量都是$1$，从中选$2$件物品，则排列有"AB","BA"两种。 输入格式 每组输入数据有两行，第一行是二个数$n$,\(m\)($1 \le m$,\(n \le 阅读全文