摘要：
链接：https://ac.nowcoder.com/acm/contest/897/L 来源：牛客网 XOR 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 32768K，其他语言65536K 64bit IO Format: %lld 题目描述 Exclusive or is a 阅读全文
摘要：
Every person likes prime numbers. Alice is a person, thus she also shares the love for them. Bob wanted to give her an affectionate gift but couldn't 阅读全文