\[ \texttt{Preface} \] 赛时,把 " 任意时刻 " 理解成 " 整数时刻 " 了,看起来一脸不可做的亚子,还各种推式子. 话说我为什么觉得 E 比 F 还难. \[ \texttt{Description} \] 一个坐标轴 \(OX\) 上有 \(n\) 个点,第 \(i\) 个点位于整数点 \(x_i\) ,速度为 \(v_i\) . 所有点以恒定的速度移动,在时刻 \(t\) ( \(t\) 可以是非整数),第 \(i\) 个点的坐标可以…

Solution 按 \(x\) 关键字升序排序,依次枚举每个点 考虑对任意 \(x_j < x_i\),那么当 \(v_j \leq v_i\) 时,它们不会相交,且 \(dis\) 就是它们初态的距离 \(x_i-x_j\) 开两个树状数组,以离散化后的 \(v\) 为下标,一个维护个数和,一个维护坐标和 那么每次询问的答案就是 个数和 $\cdot x_i - $ 坐标和 然后把这个点插进去即可 #include <bits/stdc++.h> using namespace st…

Codeforce 1311 F. Moving Points 解析(思維.離散化.BIT.前綴和) 今天我們來看看CF1311F 題目連結 題目 略,請直接看原題. 前言 最近寫1900的題目更容易不看題解了,不知道是不是較少人\(AC\)的同難度題目會比較簡單. @copyright petjelinux 版權所有 觀看更多正版原始文章請至petjelinux的blog 想法 首先注意到,如果\(x\)座標上的前後兩點\(x_i,x_j\),\(x_i<x_j\),如果\(v[x_i]>v…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 878    Accepted Submission(s): 353 Problem Description There are N points in total. Every point moves in certain direction and c…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 710    Accepted Submission(s): 290 Problem Description There are N points in total. Every point moves in certain direction and…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 964    Accepted Submission(s): 393 Problem Description There are N points in total. Every point moves in certain direction and c…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 72    Accepted Submission(s): 18 Problem Description There are N points in total. Every point moves in certain direction and cer…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 612    Accepted Submission(s): 250 Problem Description There are N points in total. Every point moves in certain direction and…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2122    Accepted Submission(s): 884 Problem Description There are N points in total. Every point moves in certain direction and…

Problem Description There are N points in total. Every point moves in certain direction and certain speed. We want to know at what time that the largest distance between any two points would be minimum. And also, we require you to calculate that mini…