摘要：
E. GukiZ and GukiZiana time limit per test 10 seconds memory limit per test 256 megabytes input standard input output standard output Professor GukiZ 阅读全文
摘要：
A. Counterexample time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output A. Counterexample time 阅读全文