摘要：
A. Blackjack time limit per test 2 seconds A. Blackjack time limit per test memory limit per test 256 megabytes memory limit per test input standard i 阅读全文
摘要：
A. Even Substrings time limit per test 0.5 seconds time limit per test memory limit per test 256 megabytes memory limit per test input standard input 阅读全文