小白一枚,python解法,共同学习,一起进步. Problem 1: Multiples of 3 and 5 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. 解题思路: 找…

开始做 Project Euler 的练习题.网站上总共有565题,真是个大题库啊! # Project Euler, Problem 1: Multiples of 3 and 5 # If we list all the natural numbers below 10 # that are multiples of 3 or 5, we get 3, 5, 6 and 9. # The sum of these multiples is 23. # Find the sum of all…

网上一个专门用来给新手练算法的: http://projecteuler.net/problem=1 Multiples of 3 and 5 Problem 1 Published on Friday, 5th October 2001, 06:00 pm; Solved by 368828 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The su…

Problem A : Electric Bill 题目大意:进行电量分级制收费,1000kwh及以下一档收费,1000kwh以上按另一档收费,给出每个人的电量总额,问每人应支付多少钱. 思路:基础if else题,对于每个电量判断是否大于1000,再分别计算≤1000的价格和>1000的价格,最后相加并输出. #include<algorithm> #include<iostream> #include<cstring> #include<cstdio&g…

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. 题目大意: 10以下的自然数中,属于3和5的倍数的有3,5,6和9,它们之和是23. 找出1000以下的自然数中,属于3和5的倍…

K - Yet Another Multiple Problem Time Limit:20000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4474 Appoint description:  System Crawler  (2014-10-16) Description There are tons of problems about integer mul…

#include<stdio.h> int main(void){ int n1, n2,n3; n1=333*(3+999)/2; n2=199*(5+995)/2; n3=66*(15+990)/2; printf("%d\n",n1+n2-n3); n1=getchar(); return 0; } Multiples of 3 and 5 Problem 1 If we list all the natural numbers below 10 that are m…

Sieve of Eratosthenes (素数筛选算法) Given a number n, print all primes smaller than or equal to n. It is also given that n is a small number. For example, if n is 10, the output should be “2, 3, 5, 7″. If n is 20, the output should be “2, 3, 5, 7, 11, 13,…

Yet Another Multiple Problem Time Limit : 40000/20000ms (Java/Other)   Memory Limit : 65536/65536K (Java/Other) Total Submission(s) : 2   Accepted Submission(s) : 1 Problem Description There are tons of problems about integer multiples. Despite the f…

Yet Another Multiple Problem Description There are tons of problems about integer multiples. Despite the fact that the topic is not original, the content is highly challenging. That’s why we call it “Yet Another Multiple Problem”. In this problem, yo…