摘要：
Goldbach's ConjectureTime Limit:1000MSMemory Limit:65536KTotal Submissions:33082Accepted:12691DescriptionIn 1742, Christian Goldbach, a German amateur mathematician, sent a letter to Leonhard Euler in which he made the following conjecture:Every even number greater than 4 can be written as the s 阅读全文
摘要：
WatchcowTime Limit:3000MSMemory Limit:65536KTotal Submissions:5178Accepted:2171Special JudgeDescriptionBessie's been appointed the new watch-cow for the farm. Every night, it's her job to walk across the farm and make sure that no evildoers are doing any evil. She begins at the barn, makes h 阅读全文