传送门 Average distance Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 682    Accepted Submission(s): 244Special Judge Problem Description Given a tree, calculate the average distance between two…

[题目链接]:http://acm.hdu.edu.cn/showproblem.php?pid=2376 [题意] 让你计算树上任意两点之间的距离的和. [题解] 算出每条边的两端有多少个节点设为num1和num2; 这条边的边权为w; 答案累加上w*num1*num2; 然后总的答案除n*(n-1)/2; [完整代码] #include <bits/stdc++.h> using namespace std; #define lson l,m,rt<<1 #define rso…

http://acm.hdu.edu.cn/showproblem.php?pid=4712 Hamming Distance Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 797    Accepted Submission(s): 284 Problem Description (From wikipedia) For binary…

Hamming Distance Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Problem Description (From wikipedia) For binary strings a and b the Hamming distance is equal to the number of ones in a XOR b. For calculating Hammi…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4712 题目大意:任意两个数按位异或后二进制中含1的个数被称为海明距离,给定n个数,求出任意其中两个最小的海明数,输入是16进制. Sample Input 2 2 12345 54321 4 12345 6789A BCDEF 0137F   Sample Output 6 7 分析:用随机数来模拟,加srand()函数,放置产生伪随机数.代码有2个. 代码1: # include<iostream…

Hamming Distance Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 499    Accepted Submission(s): 163 Problem Description (From wikipedia) For binary strings a and b the Hamming distance is equal…

Hamming Distance Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 1127 Accepted Submission(s): 425 Problem Description (From wikipedia) For binary strings a and b the Hamming distance is equal to t…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4712 解题报告:输入n个数,用十六进制的方式输入的,任意选择其中的两个数进行异或,求异或后的数用二进制表示后1的个数最小的是多少?(n<=100000) 这题看了解题报告,大家都说用随机算法,试过了,随机100000次就过了,50000次都不行,但还是不懂这样怎么可以,唯一的解释就是这个值域也就是结果一共只有21个, 得出正确的结果的可能性很大,但是并不能100%保证结果是对的.无语第一次碰见这种算…

Hamming Distance Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 1569    Accepted Submission(s): 616 Problem Description (From wikipedia) For binary strings a and b the Hamming distance is equal…

Edit distance Time Limit : 2000/1000ms (Java/Other)   Memory Limit : 32768/32768K (Java/Other) Total Submission(s) : 39   Accepted Submission(s) : 17 Problem Description Given a string, an edit script is a set of instructions to turn it into another…