1552: Friends Time Limit: 3 Sec Memory Limit: 256 MBSubmit: 723 Solved: 198[Submit][Status][Web Board] Description On an alien planet, every extraterrestrial is born with a number. If the sum of two numbers is a prime number, then two extraterrestr
C - Prime number or not Time Limit:2000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice FZU 1649 Description Your task is simple.Give you a number N, you should judge whether N is a prime number or not. Input There
GCDLCM 题目链接(点击) 题目描述 In FZU ACM team, BroterJ and Silchen are good friends, and they often play some interesting games. One day they play a game about GCD and LCM. firstly BrotherJ writes an integer A and Silchen writes an integer B on the paper. The
10200 - Prime Time 此题极坑(本菜太弱),鉴定完毕,9遍过. 题意:很简单的求一个区间[a,b]内满足i*i+i+41(i>=a&&i<=b,0<=a<=b<=10000.)是素数的数有多个,求出百分比. 思路:直接裸判就行了(竟然不超时),但结果要加上1e-8(are you kidding me?). 下面来说说我怎么跪了,开始也是直接裸判,我
Prime Test Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 29046 Accepted: 7342 Case Time Limit: 4000MS Description Given a big integer number, you are required to find out whether it's a prime number. Input The first line contains the