Given an integer nn, Chiaki would like to find three positive integers xx, yy and zzsuch that: n=x+y+zn=x+y+z, x∣nx∣n, y∣ny∣n, z∣nz∣n and xyzxyz is maximum. Input There are multiple test cases. The first line of input contains an integer TT (1≤T≤1061…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=6325                                   Interstellar Travel Problem Description After trying hard for many years, Little Q has finally received an astronaut license. To celebrate the fact, he intends to buy…

Chiaki often participates in international competitive programming contests. The time zone becomes a big problem.  Given a time in Beijing time (UTC +8), Chiaki would like to know the time in another time zone ss. Input There are multiple test cases.…

hiaki has an array of nn positive integers. You are told some facts about the array: for every two elements aiai and ajaj in the subarray al..ral..r (l≤i<j≤rl≤i<j≤r), ai≠ajai≠aj holds.  Chiaki would like to find a lexicographically minimal array whi…

Chiaki has 3n3n points p1,p2,-,p3np1,p2,-,p3n. It is guaranteed that no three points are collinear.  Chiaki would like to construct nn disjoint triangles where each vertex comes from the 3n3n points. Input There are multiple test cases. The first lin…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=6331 Walking Plan  Problem Description There are n intersections in Bytetown, connected with m one way streets. Little Q likes sport walking very much, he plans to walk for q days. On the i -th day, Little…

Little Q and Little T are playing a game on a tree. There are n vertices on the tree, labeled by 1,2,...,n , connected by n−1 bidirectional edges. The i -th vertex has the value of wi .In this game, Little Q needs to grab some vertices on the tree. H…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=6322 Problem Description In number theory, Euler's totient function φ(n) counts the positive integers up to a given integer n that are relatively prime to n . It can be defined more formally as the number…

Maximum Multiple Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 494    Accepted Submission(s): 215 Problem Description Given an integer n, Chiaki would like to find three positive integers x, y…

Maximum Multiple Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3241    Accepted Submission(s): 1344 Problem Description Given an integer n, Chiaki would like to find three positive integers x,…