Cleaning Shifts Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wants to have one cow working on cleaning things up and has divided the day into T shifts (1 <= T <= 1,000,000…
Cleaning Shifts Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 40751 Accepted: 9871 Description Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wants to have one co…
E. Third-Party Software - 2 time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output Pavel is developing another game. To do that, he again needs functions available in a third-party library too famous to be…
可以说是区间覆盖问题的例题... Note: 区间包含+排序扫描: 要求覆盖区间[s, t]; 1.把各区间按照Left从小到大排序,如果区间1的起点大于s,则无解(因为其他区间的左起点更大):否则选择起点在s的最长区间; 2.选择区间[li, ri]后,新的起点应更新为ri,并且忽略所有区间在ri之前的部分: Minimal coverage The Problem Given several segments of line (int the X axis) with coordinat…
Minimal coverage The Problem Given several segments of line (int the X axis) with coordinates [Li,Ri]. You are to choose the minimal amount of them, such they would completely cover the segment [0,M]. The Input The first line is the number of test…
Minimal coverage The Problem Given several segments of line (int the X axis) with coordinates [Li,Ri]. You are to choose the minimal amount of them, such they would completely cover the segment [0,M]. The Input The first line is the number of test ca…
10020 Given several segments of line (int the X axis) with coordinates [Li, Ri]. You are to choose the minimalamount of them, such they would completely cover the segment [0, M].InputThe first line is the number of test cases, followed by a blank lin…
UVa 10382 - Watering Grass n sprinklers are installed in a horizontal strip of grass l meters long and w meters wide. Each sprinkler is installed at the horizontal center line of the strip. For each sprinkler we are given its position as the distance…
n sprinklers are installed in a horizontal strip of grass l meters long and w meters wide. Each sprinkler is installed at the horizontal center line of the strip. For each sprinkler we are given its position as the distance from the left end of the c…
题意:有一块草坪,这块草坪长l 米,宽 w 米,草坪有一些喷头,每个喷头在横坐标为 p 处,每个喷头的纵坐标都是(w/2) ,并且喷头的洒水范围是一个以喷头为圆心,半径为 r 米的圆.每次最少需要打开多少个喷头来给草坪洒水,并且草坪各处都能被洒到,不行输出-1 思路:这是一道区间覆盖(贪心)题: 有一堆区间 l1, r1:l2, r2...ln,rn,问你最少用几个能覆盖0~P的长度 那么我们先按照L升序排序,far是目前所能找到的最远处,R是上一次查询所能找到的最远处,每次查询我们都要找后面满…
n sprinklers are installed in a horizontal strip of grass l meters long and w meters wide. Each sprinkler is installed at the horizontal center line of the strip. For each sprinkler we are given its position as the distance from the left end of the c…
链接: http://acm.timus.ru/problem.aspx?space=1&num=1303 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=26733#problem/D D - Minimal Coverage Time Limit:1000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u Submit Status Practice UR…
Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7788 Accepted: 3880 Description The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile phone nets in Sweden. The most st…
Treasure Exploration Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 7171 Accepted: 2930 Description Have you ever read any book about treasure exploration? Have you ever see any film about treasure exploration? Have you ever explored…
http://poj.org/problem?id=2594 Treasure Exploration Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 7398 Accepted: 3025 Description Have you ever read any book about treasure exploration? Have you ever see any film about treasure explo…
http://poj.org/problem?id=3020 Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7565 Accepted: 3758 Description The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile ph…
Treasure Exploration Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 8550 Accepted: 3495 Description Have you ever read any book about treasure exploration? Have you ever see any film about treasure exploration? Have you ever explored…
链接: http://poj.org/problem?id=3020 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22010#problem/M Antenna Placement Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5500 Accepted: 2750 Description The Global Aerial Research Centr…
The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile phone nets in Sweden. The most striking reason why they got the job, is their discovery of a new, highly noise resistant, antenna. It is called 4D…
传送门:http://poj.org/problem?id=2594 Treasure Exploration Time Limit: 6000MS Memory Limit: 65536K Total Submissions: 9802 Accepted: 3979 Description Have you ever read any book about treasure exploration? Have you ever see any film about treasure e…
