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…
B. Duff in Love Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/588/problem/B Description Duff is in love with lovely numbers! A positive integer x is called lovely if and only if there is no such positive integer a > 1 such…