D - Beauty of Array Description Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of…

A pair of numbers has a unique LCM but a single number can be the LCM of more than one possiblepairs. For example 12 is the LCM of (1, 12), (2, 12), (3,4) etc. For a given positive integer N, thenumber of different integer pairs with LCM is equal to N…

题意: 求[n, m]之间包含0的数字的个数题解:转化为求solve(n) - solve(m-1)的前缀问题 对于求0到n的解,我们举例 n = 25789 对于8这位,让其为0对答案的贡献是 (0~257)*(0~9) 假设是 n = 25709 那么让这位为0的答案贡献是 (0~256) * (0~9) + (257)* (0~9) //meek///#include<bits/stdc++.h> #include <cstdio> #include <cmath>…

D - Beauty of Array Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Submit Status Practice ZOJ 3872 Description Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integ…

D - Beauty of Array Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%lld & %llu Submit Status Practice ZOJ 3872 Appoint description:  System Crawler  (2015-04-30) Description Edward has an array A with N integers. He defines the beauty…

题目传送门 /* DP:dp 表示当前输入的x前的包含x的子序列的和, 求和方法是找到之前出现x的位置(a[x])的区间内的子序列: sum 表示当前输入x前的所有和: a[x] 表示id: 详细解释:http://blog.csdn.net/u013050857/article/details/45285515 */ #include <cstdio> #include <algorithm> #include <cmath> #include <iostrea…

/** Author: Oliver ProblemId: ZOJ 3872 Beauty of Array */ /* 需求: 求beauty sum,所谓的beauty要求如下: 1·给你一个集合,然后把所有子集合的美丽和求出来: 2·上例子,2.3.3.->2. 3. 3. 2.3. 3. 2.3. 思路: 1·既然要连续的,暴力也会爆,那么自然而然的优化,朝着递推想一下: 2·哥们把之前的算好了,那我们是不是可以用算好的值来求现在的的需要呢: 3·想好了,但是过程我不造该怎么说; 步骤:…

Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all contiguous subarray of the array A. Input There are multiple…

Beauty of Array Time Limit: 2 Seconds Memory Limit: 65536 KB Edward has an array A with N integers. He defines the beauty of an array as the summation of all distinct integers in the array. Now Edward wants to know the summation of the beauty of all…

对于没有题目积累和clever mind的我来说,想解这道题还是非常困难的,也根本没有想到用dp. from: http://blog.csdn.net/u013050857/article/details/45285515 #include <bits/stdc++.h> using namespace std; #define LL unsigned long long LL a[100010]; int main() { int n,m; scanf("%d",&am…