摘要：
Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering problems, all th 阅读全文
摘要：
Every time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water for awhi 阅读全文
摘要：
1013: [JSOI2008]球形空间产生器sphere Description 有一个球形空间产生器能够在n维空间中产生一个坚硬的球体。现在，你被困在了这个n维球体中，你只知道球面上n+1个点的坐标，你需要以最快的速度确定这个n维球体的球心坐标，以便于摧毁这个球形空间产生器。 有一个球形空间产生 阅读全文