• <ins id="pjuwb"></ins>
    <blockquote id="pjuwb"><pre id="pjuwb"></pre></blockquote>
    <noscript id="pjuwb"></noscript>
          <sup id="pjuwb"><pre id="pjuwb"></pre></sup>
            <dd id="pjuwb"></dd>
            <abbr id="pjuwb"></abbr>
            posts - 74,  comments - 33,  trackbacks - 0

            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
            神啊原諒我吧我很菜!
            看了樹狀數組還沒思路!
            代碼ac后更新
            posted on 2009-01-10 10:24 KNIGHT 閱讀(181) 評論(1)  編輯 收藏 引用

            FeedBack:
            # re: Stars[未登錄]
            2009-01-12 10:01 | Knight
            #include<stdio.h>
            #define SIZE1 32000
            #define SIZE2 15000
            int c[SIZE1],a[SIZE1],out[SIZE2],n;
            int lowbit(int k)
            {
            return k&(-k);
            }
            int sum(int k)
            {
            int ret=0;
            while(k>0)
            {
            ret+=c[k];
            k-=lowbit(k);
            }
            return ret;
            }
            void change(int pos,int delt)
            {
            while(pos<=SIZE1)
            {
            c[pos]+=delt;
            pos+=lowbit(pos);
            }
            }
            void init()
            {
            int i;
            int x,y;
            for(i=0;i<n;i++)
            {
            scanf("%d%d",&x,&y);
            x++;
            out[sum(x-1)+a[x]]++;
            change(x,1);
            a[x]++;
            }
            }
            int main()
            {
            int i;
            scanf("%d",&n);
            init();
            for(i=0;i<n;i++)
            printf("%d\n",out[i]);
            }
            pip來了,但是他說他也不會他是線段樹過的。。。。。
            線段樹。。。。。代碼不是我的。。。網上的。。。。不過不錯。。。題目有個條件就是按y升序給出數據。。。。所以可以用樹狀數組,其實可以排序在用的。。。。。繼續物理。。。。關機。。。  回復  更多評論
              
            <2009年1月>
            28293031123
            45678910
            11121314151617
            18192021222324
            25262728293031
            1234567

            常用鏈接

            留言簿(8)

            隨筆檔案

            文章檔案

            Friends

            OJ

            搜索

            •  

            最新評論

            閱讀排行榜

            評論排行榜

            久久久国产99久久国产一| 看久久久久久a级毛片| 亚洲国产高清精品线久久| 国产精品久久久久久影院| 久久99亚洲综合精品首页| 色偷偷888欧美精品久久久| 亚洲国产成人久久一区久久| 久久精品国产一区二区三区 | 国产精品久久久亚洲| 久久婷婷五月综合97色一本一本| 国产精品久久久久9999高清| 国产一级做a爰片久久毛片| 午夜精品久久久内射近拍高清| 亚洲欧美成人综合久久久| 精品久久久久久无码人妻蜜桃| 久久精品国产亚洲AV久| 色成年激情久久综合| 精品国产乱码久久久久久1区2区| 九九久久99综合一区二区| 国产亚洲精品自在久久| 久久国产免费观看精品3| 久久妇女高潮几次MBA| 国产精品久久久久久久app| 久久久久亚洲爆乳少妇无| 国产一级做a爰片久久毛片| 色欲综合久久中文字幕网 | 国产亚洲精午夜久久久久久 | 无码国产69精品久久久久网站| 久久99亚洲综合精品首页| 国产亚洲精午夜久久久久久 | 久久香蕉国产线看观看猫咪?v| 国产成人99久久亚洲综合精品| 99久久精品九九亚洲精品| 久久久一本精品99久久精品88| 久久91精品国产91| 亚洲AV无码1区2区久久 | 麻豆精品久久精品色综合| 久久精品国产亚洲5555| 精品久久久久久成人AV| 国产精品日韩深夜福利久久| 亚洲精品午夜国产VA久久成人|