Tree and Permutation Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 619    Accepted Submission(s): 214 Problem Description There are N vertices connected by N−1 edges, each edge has its own len…

Tree and Permutation Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 0    Accepted Submission(s): 0 Problem Description There are N vertices connected by N−1 edges, each edge has its own length.…

题目传送门:http://acm.hdu.edu.cn/showproblem.php?pid=6438 Buy and Resell Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1233    Accepted Submission(s): 407 Problem Description The Power Cube is used…

题目传送门:http://acm.hdu.edu.cn/showproblem.php?pid=6447 YJJ's Salesman Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 919    Accepted Submission(s): 290 Problem Description YJJ is a salesman who h…

给定的\(p\)是素数,要求给定一个加法运算表和乘法运算表,使\((m+n)^p = m^p +n^p(0 \leq m,n < p)\). 因为给定的p是素数,根据费马小定理得 \((m+n)^{p-1} \equiv 1(mod\ p)\) 因此,\((m+n)^{p} \equiv m + n\ (mod\ p)\), 同时,\(m^p + n^p \equiv m + n\ (mod\ p)\). 所以在模p意义下,\((m+n)^p = m^p +n^p(0\leq m,n < p)…

http://acm.hdu.edu.cn/showproblem.php?pid=6440 题意:让你重新定义任意一对数的乘法和加法结果(输出乘法口诀表和加法口诀表),使得m^p+n^p==(m+n)^p(p为质数),并且存在一个0<q<p使得 q^k(0<k<p)取遍1~p-1的所有值,并且该运算是封闭的(exists an integer q(0<q<p) to make the set {qk|0<k<p,k∈Z} equal to {k|0<…

Neko's loop Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 1386 Accepted Submission(s): 316 Problem Description Neko has a loop of size n. The loop has a happy value ai on the i−th(0≤i≤n−1) grid.…

A - Buy and Resell 题意:给出n个交易点,每次能够选择买或者卖,求获得最大利润 思路:维护两个优先队列,一个是卖,一个是替换,当价格差相同时,优先替换,因为次数要最少 #include <bits/stdc++.h> using namespace std; #define ll long long #define N 100010 int t, n; ll arr[N]; priority_queue <ll, vector <ll>, greater &…

Find Integer Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 6597    Accepted Submission(s): 1852Special Judge Problem Description people in USSS love math very much, and there is a famous math…

Dream Time Limit: 12000/6000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1014    Accepted Submission(s): 200Special Judge Problem Description Freshmen frequently make an error in computing the power of a sum of r…