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Stars
Time Limit: 1000MS | Memory Limit: 65536K | |
Total Submissions: 18171 | Accepted: 7918 |
Description
Astronomers often examine star maps where stars are represented by points on a plane and each star has Cartesian coordinates. Let the level of a star be an amount of the stars that are not higher and not to the right of the given star. Astronomers want to know the distribution of the levels of the stars. For example, look at the map shown on the figure above. Level of the star number 5 is equal to 3 (it's formed by three stars with a numbers 1, 2 and 4). And the levels of the stars numbered by 2 and 4 are 1. At this map there are only one star of the level 0, two stars of the level 1, one star of the level 2, and one star of the level 3. You are to write a program that will count the amounts of the stars of each level on a given map.
Input
The first line of the input file contains a number of stars N (1<=N<=15000). The following N lines describe coordinates of stars (two integers X and Y per line separated by a space, 0<=X,Y<=32000). There can be only one star at one point of the plane. Stars are listed in ascending order of Y coordinate. Stars with equal Y coordinates are listed in ascending order of X coordinate.
Output
The output should contain N lines, one number per line. The first line contains amount of stars of the level 0, the second does amount of stars of the level 1 and so on, the last line contains amount of stars of the level N-1.
Sample Input
5 1 1 5 1 7 1 3 3 5 5
Sample Output
1 2 1 1 0
Hint
This problem has huge input data,use scanf() instead of cin to read data to avoid time limit exceed.
Source
今次系可以同并查集媲美既精巧数据结构!!树状数组!
呢题好基本既树状数组应用…………维护区间和首先介绍一下树状数组三神器:
求最高位数位运算:
Update函数负责更新:
Query负责查询:
尼条题主要思路就系用树状数组作为一个hash表记录映射到记录高度level既记录数组。
8615413 | GZHU1006100106 | 2352 | Accepted | 2668K | 172MS | C++ | 621B | 2011-05-09 13:13:18 |
经典题目!
发表评论
-
HDU 1075 What Are You Talking About
2011-08-04 11:00 868What Are You Talking About Tim ... -
HDU 1058 Humble Numbers
2011-08-02 15:55 1227Humble Numbers Time Limit: 200 ... -
HDU 2095 find your present (2)
2011-08-02 16:13 822find your present (2) Time Lim ... -
HDU 1022 Train Problem I
2011-08-02 21:00 1017Train Problem I Time Limit: 20 ... -
2142 HDU box
2011-08-02 21:21 766box Time Limit: 3000/1000 MS ( ... -
HDU 2151 Worm
2011-08-01 20:48 857Worm Time Limit: 1000/1000 MS ... -
HDU 2722 Here We Go(relians) Again
2011-08-02 00:06 1031Here We Go(relians) Again Time ... -
HDU 3791 二叉搜索树
2011-08-02 14:26 1212二叉搜索树 Time Limit: 20 ... -
PKU 2774 Long Long Message
2011-07-31 21:26 908Long Long Message Time Li ... -
PKU 2777 Count Color
2011-07-31 21:31 802Count Color Time Limit: 1 ... -
HDU 2098 分拆素数和
2011-07-31 21:08 1065分拆素数和 Time Limit: 1000/1000 MS ... -
ZOJ 3512 Financial Fraud .
2011-07-31 20:49 1293Financial Fraud Time Limit: 3 ... -
HDU 1798 Tell me the area .
2011-07-31 20:47 1130Tell me the area Time Limit: 3 ... -
HDU 2962 Trucking .
2011-07-31 20:46 690Trucking Time Limit: 20000/100 ... -
HDU 1596 find the safest road .
2011-07-31 20:45 605find the safest road Time Limi ... -
HDU 2553 N皇后问题 .
2011-07-31 20:20 706N皇后问题 Time Limit: 2000/1000 MS ... -
HDU 1392 Surround the Trees .
2011-07-31 20:19 804Surround the Trees Time Limit: ... -
HDU 1234 开门人和关门人 .
2011-07-31 20:17 677开门人和关门人 Time Limit: 2000/1000 ... -
HDU 1316 How Many Fibs? .
2011-07-31 20:15 981How Many Fibs? Time Limit: 200 ... -
HDU 1028 Ignatius and the Princess III .
2011-07-31 20:13 760Ignatius and the Princess III ...
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