摘要：
Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise time interval A..B (1 <= A <= B <= 1,0 阅读全文
摘要：
A. Eleven time limit per test ： 1 second memory limit per test： 256 megabytes input： standard input output： standard output Eleven wants to choose a n 阅读全文
摘要：
B. Radio Station time limit per test： 2 seconds memory limit per test： 256 megabytes input： standard input output： standard output As the guys fried t 阅读全文