摘要：
time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output time limit per test 2 seconds time limit 阅读全文
摘要：
You are given a sequence of n integers a1, a2, ..., an. Determine a real number x such that the weakness of the sequence a1 - x, a2 - x, ..., an - x i 阅读全文
摘要：
memory limit per test 512 megabytes input standard input output standard output memory limit per test 512 megabytes memory limit per test input standa 阅读全文