• <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

            欧美大香线蕉线伊人久久| 久久亚洲国产成人影院网站| 国产成年无码久久久久毛片| 亚洲AV日韩精品久久久久| 国内精品伊人久久久久| 亚洲人成无码久久电影网站| 97热久久免费频精品99| 国产精品久久久久免费a∨| 色综合久久无码中文字幕| 久久久久亚洲AV成人网人人网站 | 狠狠久久综合伊人不卡| 久久综合久久性久99毛片| 漂亮人妻被黑人久久精品| 久久久久国色AV免费看图片| 久久精品国产99久久无毒不卡 | 精品久久久久久久| 香蕉久久av一区二区三区| 久久se精品一区二区影院| 久久精品国产久精国产思思| 久久综合亚洲色HEZYO社区| 久久久久国产精品麻豆AR影院| 国产精品久久久久jk制服| 久久精品国产亚洲av麻豆蜜芽| 久久亚洲国产精品123区| 国内精品久久久久久久亚洲| 国产综合久久久久| 久久综合国产乱子伦精品免费| 狠狠色婷婷久久一区二区| 久久精品国产久精国产果冻传媒| 久久久久久av无码免费看大片| 久久精品二区| 日韩亚洲国产综合久久久| 性欧美大战久久久久久久| 一本色道久久88综合日韩精品| 欧美成a人片免费看久久| 精品久久久无码中文字幕| 久久精品亚洲男人的天堂| 一级做a爰片久久毛片看看| 久久精品成人欧美大片| 久久精品国产亚洲AV大全| 亚洲国产精品久久久久婷婷老年|