The harmonic value of the permutation p1,p2,⋯pn is ∑i=1n−1gcd(pi.pi+1) Mr. Frog is wondering about the permutation whose harmonic value is the strictly k-th smallest among all the permutations of [n]. InputThe first line contains only one integer T (…
Harmonic Value Description Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 0 Accepted Submission(s): 0Special Judge Problem Description The harmonic value of the permutation p1,p2,⋯pn is ∑i=1…
题目描述 The harmonic value of the permutation $p_1,p_2,\cdots p_n$ is$$\sum_{i=1}^{n-1} gcd(p_i.p_{i+1})$$Mr. Frog is wondering about the permutation whose harmonic value is the strictly k-th smallest among all the permutations of [n]. 输入 The first line…
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 786 Accepted Submission(s): 456Special Judge Problem Description The harmonic value of the permutation p1,p2,⋯pn is ∑i=1n−1gcd(pi.pi+1) Mr. Fr…
圆桌会议 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3046 Accepted Submission(s): 2123 Problem Description HDU ACM集训队的队员在暑假集训时经常要讨论自己在做题中遇到的问题.每当面临自己解决不了的问题时,他们就会围坐在一张圆形的桌子旁进行交流,经过大家的讨论后一般没有解…
Octorber 21st Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3688 Accepted Submission(s): 2268 Problem Description HDU's 50th birthday, on Octorber 21st, is coming. What an exciting day!! As…
Problem Description HDU's 50th birthday, on Octorber 21st, is coming. What an exciting day!! As a student of HDU, I always want to know how many days are there between today and Octorber 21st.So, write a problem and tell me the answer.Of course, the…
Hdu Girls' Day Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1629 Accepted Submission(s): 490 Problem Description Hdu Girls' Day is a traditional activity in Hdu. Girls in Hdu participate i…
