zoukankan      html  css  js  c++  java

  • nyoj 164 Game of Connections

     

    Game of Connections

    时间限制：1000 ms  |  内存限制：65535 KB
    难度：3
     
    描述
    This is a small but ancient game. You are supposed to write down the numbers 1, 2, 3, . . . , 2n - 1, 2n consecutively in clockwise order on the ground to form a circle, and then, to draw some straight line segments to connect them into number pairs. Every number must be connected to exactly one another. 
    And, no two segments are allowed to intersect. 
    It's still a simple game, isn't it? But after you've written down the 2n numbers, can you tell me in how many different ways can you connect the numbers into pairs? Life is harder, right?
     
    输入
    Each line of the input file will be a single positive number n, except the last line, which is a number -1.
    You may assume that 1 <= n <= 100.
    输出
    For each n, print in a single line the number of ways to connect the 2n numbers into pairs
    样例输入
    2
3
-1
    样例输出
    2
5
    来源
    POJ
    上传者
    iphxer
    求卡特南数 我直接打表的
    嘿嘿标程是用java 写的 其实我也想用java来写的 java写大数挺好的
    View Code 
      1  
  2 #include <stdio.h>
  3 
  4 char list[100][100]={
  5   "1",
  6   "2",
  7   "5",
  8   "14",
  9   "42",
 10   "132",
 11   "429",
 12   "1430",
 13   "4862",
 14   "16796",
 15   "58786",
 16   "208012",
 17   "742900",
 18   "2674440",
 19   "9694845",
 20   "35357670",
 21   "129644790",
 22   "477638700",
 23   "1767263190",
 24   "6564120420",
 25   "24466267020",
 26   "91482563640",
 27   "343059613650",
 28   "1289904147324",
 29   "4861946401452",
 30   "18367353072152",
 31   "69533550916004",
 32   "263747951750360",
 33   "1002242216651368",
 34   "3814986502092304",
 35   "14544636039226909",
 36   "55534064877048198",
 37   "212336130412243110",
 38   "812944042149730764",
 39   "3116285494907301262",
 40   "11959798385860453492",
 41   "45950804324621742364",
 42   "176733862787006701400",
 43   "680425371729975800390",
 44   "2622127042276492108820",
 45   "10113918591637898134020",
 46   "39044429911904443959240",
 47   "150853479205085351660700",
 48   "583300119592996693088040",
 49   "2257117854077248073253720",
 50   "8740328711533173390046320",
 51   "33868773757191046886429490",
 52   "131327898242169365477991900",
 53   "509552245179617138054608572",
 54   "1978261657756160653623774456",
 55   "7684785670514316385230816156",
 56   "29869166945772625950142417512",
 57   "116157871455782434250553845880",
 58   "451959718027953471447609509424",
 59   "1759414616608818870992479875972",
 60   "6852456927844873497549658464312",
 61   "26700952856774851904245220912664",
 62   "104088460289122304033498318812080",
 63   "405944995127576985730643443367112",
 64   "1583850964596120042686772779038896",
 65   "6182127958584855650487080847216336",
 66   "24139737743045626825711458546273312",
 67   "94295850558771979787935384946380125",
 68   "368479169875816659479009042713546950",
 69   "1440418573150919668872489894243865350",
 70   "5632681584560312734993915705849145100",
 71   "22033725021956517463358552614056949950",
 72   "86218923998960285726185640663701108500",
 73   "337485502510215975556783793455058624700",
 74   "1321422108420282270489942177190229544600",
 75   "5175569924646105559418940193995065716350",
 76   "20276890389709399862928998568254641025700",
 77   "79463489365077377841208237632349268884500",
 78   "311496878311103321137536291518809134027240",
 79   "1221395654430378811828760722007962130791020",
 80   "4790408930363303911328386208394864461024520",
 81   "18793142726809884575211361279087545193250040",
 82   "73745243611532458459690151854647329239335600",
 83   "289450081175264899454283846029490767264392230",
 84   "1136359577947336271931632877004667456667613940",
 85   "4462290049988320482463241297506133183499654740",
 86   "17526585015616776834735140517915655636396234280",
 87   "68854441132780194707888052034668647142985206100",
 88   "270557451039395118028642463289168566420671280440",
 89   "1063353702922273835973036658043476458723103404520",
 90   "4180080073556524734514695828170907458428751314320",
 91   "16435314834665426797069144960762886143367590394940",
 92   "64633260585762914370496637486146181462681535261000",
 93   "254224158304000796523953440778841647086547372026600",
 94   "1000134600800354781929399250536541864362461089950800",
 95   "3935312233584004685417853572763349509774031680023800",
 96   "15487357822491889407128326963778343232013931127835600",
 97   "60960876535340415751462563580829648891969728907438000",
 98   "239993345518077005168915776623476723006280827488229600",
 99   "944973797977428207852605870454939596837230758234904050",
100   "3721443204405954385563870541379246659709506697378694300",
101   "14657929356129575437016877846657032761712954950899755100",
102   "57743358069601357782187700608042856334020731624756611000",
103   "227508830794229349661819540395688853956041682601541047340",
104   "896519947090131496687170070074100632420837521538745909320"
105 };
106 
107 int main(void)
108 {
109  int k;
110  while (scanf("%ld",&k)==1)
111  {
112   if (k==-1)
113    break;
114   printf("%s\n",list[k-1]);
115  }
116  return 0;
117 }
118
  • 相关阅读:
    添加或删除项并动态记录项的值
    练习题。对DOM中document的深刻理解巩固
    document--文档中的操作，操作属性、操作样式、操作元素
    10.13DOM中document--文档1找到元素的方法，还有元素内容属性
    函数的定义，语法，二维数组，几个练习题
    10.11讲的内容总结
    js基础巩固练习
    10.9做的一个静态页面（巩固前面的内容）
    9.29学习的js基础
    9.28做的作业（企业名称静态网页）
  • 原文地址：https://www.cnblogs.com/wujianwei/p/2637031.html
Copyright © 2011-2022 走看看