摘要：How many prime numbersTime Limit: 3000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7120Accepted Submission(s): 2375Problem DescriptionGive you a lot of positive integers, just to find out how many prime numbers there are.InputThere are a lot of cases. In each . 阅读全文

摘要：素数回文Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6234Accepted Submission(s): 1421Problem Descriptionxiaoou33对既是素数又是回文的数特别感兴趣。比如说151既是素数又是个回文。现在xiaoou333想要你帮助他找出某个范围内的素数回文数，请你写个程序找出 a 跟b 之间满足条件的数。(5 <= a < b <= 100,000,000); Input这里有许多组数 阅读全文

摘要：Largest prime factorTime Limit: 5000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4026Accepted Submission(s): 1415Problem DescriptionEverybody knows any number can be combined by the prime number.Now, your task is telling me what position of the largest prime f. 阅读全文

摘要：七夕节Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18945Accepted Submission(s): 5697Problem Description七夕节那天,月老来到数字王国,他在城门上贴了一张告示,并且和数字王国的人们说:"你们想知道你们的另一半是谁吗?那就按照告示上的方法去找吧!"人们纷纷来到告示前,都想知道谁才是自己的另一半.告示如下:数字N的因子就是所有比N小又能被N整除的所有正整数,如12的因子有1,2 阅读全文

摘要：FactorialTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1741Accepted Submission(s): 1114Problem DescriptionThe most important part of a GSM network is so called Base Transceiver Station (BTS). These transceivers form the areas called cells (this . 阅读全文