Problem Description As we all know that RXD is a life winner, therefore he always goes out, dating with his female friends.Nevertheless, it is a pity that his female friends don't like extremely hot temperature. Due to this fact, they would not come…

Problem Description Little Q's clock is alarming! It's time to get up now! However, after reading the time on the clock, Little Q lies down and starts sleeping again. Well, he has 5 alarms, and it's just the first one, he can continue sleeping for a…

Problem Description RXD has a tree T, with the size of n. Each edge has a cost.Define f(S) as the the cost of the minimal Steiner Tree of the set S on tree T. he wants to divide 2,3,4,5,6,…n into k parts S1,S2,S3,…Sk,where ⋃Si={2,3,…,n} and for all d…

Problem Description RXD is a good mathematician.One day he wants to calculate: ∑i=1nkμ2(i)×⌊nki−−−√⌋ output the answer module 109+7.1≤n,k≤1018 μ(n)=1(n=1) μ(n)=(−1)k(n=p1p2…pk) μ(n)=0(otherwise) p1,p2,p3…pk are different prime numbers   Input There a…

Problem Description HazelFan is given two positive integers a,b, and he wants to calculate amodb. But now he forgets the value of b and only remember the value of a, please tell him the number of different possible results.   Input The first line con…

Problem Description The school set up three elective courses, assuming that these courses are A, B, C. N classes of students enrolled in these courses.Now the school wants to count the number of students who enrolled in at least one course in each cl…

Problem Description Sdjpx is a powful man,he controls a big country.There are n soldiers numbered 1~n(1<=n<=3000).But there is a big problem for him.He wants soldiers sorted in increasing order.He find a way to sort,but there three rules to obey.1.H…

题目传送: Hybrid Crystals Problem Description > Kyber crystals, also called the living crystal or simply the kyber, and known as kaiburr crystals in ancient times, were rare, Force-attuned crystals that grew in nature and were found on scattered planets…

题目传送:Killer Names Problem Description > Galen Marek, codenamed Starkiller, was a male Human apprentice of the Sith Lord Darth Vader. A powerful Force-user who lived during the era of the Galactic Empire, Marek originated from the Wookiee home planet…

题目传送:http://acm.hdu.edu.cn/showproblem.php?pid=6045 Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 687    Accepted Submission(s): 389 Problem Description Derek and Alfia are good friends.Derek …