摘要：
Leading and Trailing You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits o 阅读全文
摘要：
Goldbach's Conjecture Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7550 Accepted Submission(s) 阅读全文
摘要：
青蛙的约会 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 123444 Accepted: 26326 Description 两只青蛙在网上相识了，它们聊得很开心，于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上 阅读全文