摘要：
G - Balanced Lineup POJ - 3264 For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer John deci 阅读全文
摘要：
C - A Simple Problem with Integers POJ - 3468 You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operat 阅读全文