摘要：
G. Bathroom terminal Smith wakes up at the side of a dirty, disused bathroom, his ankle chained to pipes. Next to him is tape-player with a hand-writt 阅读全文
摘要：
A. Arpa and a research in Mexican wave Arpa is researching the Mexican wave. There are n spectators in the stadium, labeled from 1 to n. They start th 阅读全文