• <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
            Mobile phones
            Time Limit: 5000MS Memory Limit: 65536K
            Total Submissions: 4128 Accepted: 1616

            Description

            Suppose that the fourth generation mobile phone base stations in the Tampere area operate as follows. The area is divided into squares. The squares form an S * S matrix with the rows and columns numbered from 0 to S-1. Each square contains a base station. The number of active mobile phones inside a square can change because a phone is moved from a square to another or a phone is switched on or off. At times, each base station reports the change in the number of active phones to the main base station along with the row and the column of the matrix.

            Write a program, which receives these reports and answers queries about the current total number of active mobile phones in any rectangle-shaped area.

            Input

            The input is read from standard input as integers and the answers to the queries are written to standard output as integers. The input is encoded as follows. Each input comes on a separate line, and consists of one instruction integer and a number of parameter integers according to the following table.

            The values will always be in range, so there is no need to check them. In particular, if A is negative, it can be assumed that it will not reduce the square value below zero. The indexing starts at 0, e.g. for a table of size 4 * 4, we have 0 <= X <= 3 and 0 <= Y <= 3.

            Table size: 1 * 1 <= S * S <= 1024 * 1024
            Cell value V at any time: 0 <= V <= 32767
            Update amount: -32768 <= A <= 32767
            No of instructions in input: 3 <= U <= 60002
            Maximum number of phones in the whole table: M= 2^30

            Output

            Your program should not answer anything to lines with an instruction other than 2. If the instruction is 2, then your program is expected to answer the query by writing the answer as a single line containing a single integer to standard output.

            Sample Input

            0 4
            1 1 2 3
            2 0 0 2 2 
            1 1 1 2
            1 1 2 -1
            2 1 1 2 3 
            3
            

            Sample Output

            3
            4
            我暈了。。。。。今天腦殘了
            今天腦白癡了。。。。。居然想當然。。。首先因為變量寫錯RE N次 后來腦殘wa N次
            腦殘到居然矩形(x1,y1)(x2,y2)控制矩形面積我腦殘的居然直接相減,看來我真的是殘障人士。。。。。
            腦殘了今天。。。。。不過還好終于自己調過了。。。。。Faint。。。。oaoaoaoaooaoaoao。。。。。。
            二維樹狀數組代碼如下:
            int?Lowbit(int?now){
            ????
            return?(now&(-now));
            }

            void?add(int?x,int?y,int?now){
            ????
            if(num[x][y]+now<0){
            ????????now
            =-num[x][y];
            ????????num[x][y]
            =0;
            ????}

            ????
            else?num[x][y]+=now;
            ????
            for(int?i=x;i<=n;i+=Lowbit(i))
            ????????
            for(int?j=y;j<=n;j+=Lowbit(j)){
            ????????????tree[i][j]
            +=now;
            ????????}

            ????
            return?;
            }

            int?sum(int?x,int?y){
            ????
            int?all=0;
            ????
            for(int?i=x;i>0;i-=Lowbit(i))
            ????????
            for(int?j=y;j>0;j-=Lowbit(j))
            ????????????all
            +=tree[i][j];
            ????
            return?all;
            }
            posted on 2009-03-18 20:42 KNIGHT 閱讀(172) 評論(1)  編輯 收藏 引用

            FeedBack:
            # re: 1195 Mobile phones
            2009-05-07 13:49 | Anyone
            居然搜到你這里來了。。。

            這題我開始也腦殘了。。。。。哎  回復  更多評論
              
            <2025年7月>
            293012345
            6789101112
            13141516171819
            20212223242526
            272829303112
            3456789

            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

            97久久久久人妻精品专区| 久久精品桃花综合| 久久精品国产精品亚洲精品| 久久国产精品久久国产精品| 99久久亚洲综合精品成人| 66精品综合久久久久久久| 日韩电影久久久被窝网| 久久综合亚洲欧美成人| 情人伊人久久综合亚洲| 亚洲伊人久久成综合人影院| AV无码久久久久不卡蜜桃| 亚洲&#228;v永久无码精品天堂久久| 伊人久久大香线蕉无码麻豆| 久久99久久99小草精品免视看| 午夜福利91久久福利| 国产精品视频久久久| 国产精品久久久香蕉| 久久www免费人成精品香蕉| 日韩av无码久久精品免费| 日本加勒比久久精品| 麻豆精品久久精品色综合| 性做久久久久久久| 国产精品中文久久久久久久| 久久国产美女免费观看精品| 国产精品久久久久久福利69堂| 狠狠色丁香久久婷婷综合_中| 久久久久国色AV免费观看| 精品免费tv久久久久久久| 久久久久无码精品国产不卡| 无码任你躁久久久久久老妇App| 久久国产成人午夜aⅴ影院 | 青青草原综合久久大伊人| 久久电影网一区| 女人香蕉久久**毛片精品| 97久久综合精品久久久综合 | 青青青伊人色综合久久| 97久久精品国产精品青草| 久久亚洲国产精品一区二区| 色偷偷888欧美精品久久久| 久久久久一区二区三区| 国产精品一区二区久久精品无码 |