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单调栈

2016

poj 2082 Terrible Sets (前缀和,单调栈)

·1 min
poj 2082 题目链接 题意:这道题简直就是。。。教给大家怎么把一句话把简单的题让人出得看不懂。。。真的一点意思都没有。给出n个矩形的宽度和高度,这些矩形并排顺次排列在x轴上,问最大面积。

poj 3250 Bad Hair Day(单调栈)

·1 min
poj 3250 题意: n头牛排成一列,第n只牛在最前面,第1只牛在最后面。第i只牛能看到的牛的个数是,它前面的且没有被其他牛遮挡的牛的个数,遮挡的条件是高度大于或者相同。现在问所有牛能看到的牛的个数的和。

poj 2559 Largest Rectangle in a Histogram (单调栈)

·2 mins
poj 2559 题意:给定从左到右多个矩形,已知这此矩形的宽度都为1,长度不完全相等。这些矩形相连排成一排,求在这些矩形包括的范围内能得到的面积最大的矩形,求该面积。所求矩形可以横跨多个矩形,但不能超出原有矩形所确定的范围。

2015

codeforces 442C. Artem and Array

·1 min
C. Artem and Array time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Artem has an array of n positive integers. Artem decided to play with it. The game consists of n moves. Each move goes like this. Artem chooses some element of the array and removes it. For that, he gets min(a, b) points, where a and b are numbers that were adjacent with the removed number. If the number doesn’t have an adjacent number to the left or right, Artem doesn’t get any points.