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POJ 2739. Sum of Consecutive Prime Numbers
Sum of Consecutive Prime NumbersTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 20050Accepted: 10989DescriptionSome positive integers can be ...
分类:其他好文   时间:2015-02-02 22:45:31    阅读次数:164
prime算法的使用
prime算法的使用package PrimeApplication;import java.util.Scanner;/** * 农民要建立互联网络,目的使村庄里所有的农民连上网,并且总费用最小。 * 多组数据,每组数据给出一个n, * 然后给出n * n大小的无向图的邻接矩阵表示,值表示边...
分类:编程语言   时间:2015-02-01 21:39:03    阅读次数:172
Summary: Prime
最近遇到很多问题都跟Prime有关,于是总结一下:Prime definition:Aprime number(or aprime) is anatural numbergreater than 1 that has no positivedivisorsother than 1 and itsel...
分类:其他好文   时间:2015-02-01 07:07:26    阅读次数:217
USACO Prime Palindromes 构造回文数
这道题目一点也不卡素数的判断就是朴素的sqrt(n) 也不卡所以~放心的用吧。构造回文的时候看了HINT其中是这么写的:Generate palindromes by combining digits properly. You might need more than one of the loo...
分类:其他好文   时间:2015-01-31 17:38:32    阅读次数:174
(hdu step 2.1.3)Largest prime factor(求一个数的最大质因子的位置)
题目:       Largest prime factorTime Limit: 5000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4868 Accepted Submission(s): 1452 Problem DescriptionEverybody knows ...
分类:其他好文   时间:2015-01-30 21:08:12    阅读次数:205
(hdu step 2.1.2)How many prime numbers(判断一个数是否是质数)
题目:       How many prime numbersTime Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 8513 Accepted Submission(s): 2716 Problem DescriptionGive you a lot...
分类:其他好文   时间:2015-01-30 19:45:59    阅读次数:134
A + B Problem II
Problem DescriptionI have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.InputThe first line of ...
分类:其他好文   时间:2015-01-30 19:11:44    阅读次数:227
POJ 2739 Sum of Consecutive Prime Numbers【素数打表】
解题思路:给定一个数,判定它由几个连续的素数构成,输出这样的种数用的筛法素数打表Sum of Consecutive Prime NumbersTime Limit: 1000MSMemory Limit: 65536KTotal Submissions: 20020Accepted: 10966D...
分类:其他好文   时间:2015-01-30 16:55:00    阅读次数:143
Codeforces Round #226 (Div. 2):Problem 385C - Bear and Prime Numbers (素数刷法+前缀和)
Time Limit: 2000ms Memory Limit: 524288KB This problem will be judged on CodeForces. Original ID: 385C 64-bit integer IO format: %I64d      Java class name: (Any) Prev Submit Status Sta...
分类:其他好文   时间:2015-01-30 09:14:45    阅读次数:128
HDU2138 How many prime numbers【水题】
题目大意:给你N个数,判断N个数里素数的个数。 思路:直接暴力来做。...
分类:其他好文   时间:2015-01-29 22:35:12    阅读次数:234
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