摘要：
Best Cow Fences Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 14601 Accepted: 4720 Description Farmer John's farm consists of a long row 阅读全文
摘要：
E. Tetrahedron time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output E. Tetrahedron time limit 阅读全文
摘要：
A. Boredom time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A. Boredom time limit per test 阅读全文