摘要：题目：https://vjudge.net/problem/POJ-3190 Oh those picky N (1 <= N <= 50,000) cows! They are so picky that each one will only be milked over some precise 阅读全文

摘要：题目：https://vjudge.net/problem/POJ-2376 Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He a 阅读全文