摘要：
I. Sale in GameStore（贪心） time limit per test 2 seconds memory limit per test 512 megabytes input standard input output standard output A well-known Be 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 Your friend has recentl 阅读全文