<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>凸包 on 111qqz's blog</title><link>https://111qqz.com/en/tags/%E5%87%B8%E5%8C%85/</link><description>Recent content in 凸包 on 111qqz's blog</description><generator>Hugo -- gohugo.io</generator><language>en</language><copyright>© 2015-2026 111qqz</copyright><lastBuildDate>Sun, 25 Sep 2016 16:10:49 +0000</lastBuildDate><atom:link href="https://111qqz.com/en/tags/%E5%87%B8%E5%8C%85/index.xml" rel="self" type="application/rss+xml"/><item><title>codeforces 455 E. Function (斜率优化，线段树套凸包)</title><link>https://111qqz.com/en/post/acm-icpc/2016/2016-09-25-cf455e/</link><pubDate>Sun, 25 Sep 2016 16:10:49 +0000</pubDate><guid>https://111qqz.com/en/post/acm-icpc/2016/2016-09-25-cf455e/</guid><description>&lt;p&gt;&lt;a href="http://codeforces.com/contest/455/problem/E" target="_blank" rel="noreferrer"&gt;题目链接&lt;/a&gt;
题意：已知 f(1, j) = a[j]
f[i][j] = min (f[i-1][j],f[i-1][j-1])
然后给出 n n≤1E5 个数（a[i] ai≤1E4)，给出 m组查询（m&amp;lt;=1E5），每组两个数 x,y 问 f(x,y) 是多少。&lt;/p&gt;</description></item></channel></rss>