[题解]Digit Tree CodeForces - 716E 呵呵以为是数据结构题然后是淀粉质还行... 题目就是给你一颗有边权的树,问你有多少路径,把路径上的数字顺次写出来,是\(m\)的倍数. 很明显可以点分治嘛,我们可以按照图上的样子,把一条路径本来是\(12345678\)的路径,变成\(1234|5678\),我们记录图中左边的那种路径为\(f\)(往根),右边的那种路径为\(g\)(从根),记右边的那种到分治中心的深度为\(d\),那么这条路径就可以被表示成\(f\times 1…

215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26. What is the sum of the digits of the number 21000? 题目大意: 题目大意: 215 = 32768 并且其各位之和为 is 3 + 2 + 7 + 6 + 8 = 26. 21000 的各位数之和是多少? // (Problem 16)Power digit sum // Completed on Sun, 17 No…

131072K   A digit sum S_b(n)Sb​(n) is a sum of the base-bb digits of nn. Such as S_{10}(233) = 2 + 3 + 3 = 8   S10​(233)=2+3+3=8, S_{2}(8)=1 + 0 + 0 = 1S2​(8)=1+0+0=1, S_{2}(7)=1 + 1 + 1 = 3S2​(7)=1+1+1=3. Given NN and bb, you need to calculate \sum_…

前言   [LeetCode 题解]系列传送门:  http://www.cnblogs.com/double-win/category/573499.html   1.题目描述 Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. For example…

题目链接   Java程序 package projecteuler51to60; import java.math.BigInteger; import java.util.Iterator; import java.util.Set; import java.util.TreeSet; class level56{ void solve0(){ int maxsum=0; for(int a=2;a<100;a++){ for(int b=2;b<100;b++){ BigInteger…

>>> sum([int(i) for i in str(2**1000)]) 1366 >>>…

39. Combination Sum Given a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen from C unlimited number of times. N…

模拟计算一些分数的和,结果以带分数的形式输出注意一些细节即可 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <cmath> using namespace std; /* 模拟计算一些分数的和,结果以带分数的形式输出 注意一些细节即可 */ ; ; //long int范围实际上就是int的范围,sqrt(int)不超过…

001.Two Sum[E] Two SumE 题目 思路 1双重循环 2 排序 3 Hashmap 1.题目 Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution. Example: Given nums = [2…

题意:求出100!的各位数字和. /************************************************************************* > File Name: euler020.c > Author: WArobot > Blog: http://www.cnblogs.com/WArobot/ > Created Time: 2017年06月28日 星期三 11时46分46秒 ***************************…