博客
关于我
1041 Be Unique
阅读量:733 次
发布时间:2019-03-21

本文共 1405 字,大约阅读时间需要 4 分钟。

The task at hand is to determine the winning number in a unique lottery system designed for Martian inhabitants. The game works by participants betting on numbers from a specific range, and the winner is the first to bet on a unique number not previously chosen.

Input and Output

Each test case consists of a line starting with an integer N (≤ 10^5), followed by N bets. These bets are separated by spaces. The output should be the winning number only if there is one. If no unique number exists after all bets, return "None".

Example 1

Input:

7 5 31 5 88 67 88 17
The program processes each bet, keeping track of each number. The first unique number is "31", so it is printed.

Output:

31

Example 2

Input:

5 888 666 666 888 888
In this case, the bets go 5 times. The program counts occurrences: 888 appears 3 times, 666 appears 2 times, and both have duplicates. Thus, no unique winner exists, and the output is "None".

Technology in Action

The provided C++ implementation uses an efficient array-based approach to track bets:

  • Read the number of bets and store each in an array.
  • Maintain a frequency array to count occurrences.
  • After processing all bets, iterate through the frequency array to find the first count that equals 1.
  • Output this number or "None" if no unique number exists.
  • This approach ensures that the solution is both simple and efficient, handling up to the maximum constraints smoothly.

    转载地址:http://qahgz.baihongyu.com/

    你可能感兴趣的文章
    mysql与mem_细说 MySQL 之 MEM_ROOT
    查看>>
    MySQL与Oracle的数据迁移注意事项,另附转换工具链接
    查看>>
    mysql丢失更新问题
    查看>>
    MySQL两千万数据优化&迁移
    查看>>
    MySql中 delimiter 详解
    查看>>
    MYSQL中 find_in_set() 函数用法详解
    查看>>
    MySQL中auto_increment有什么作用?(IT枫斗者)
    查看>>
    MySQL中B+Tree索引原理
    查看>>
    mysql中cast() 和convert()的用法讲解
    查看>>
    mysql中datetime与timestamp类型有什么区别
    查看>>
    MySQL中DQL语言的执行顺序
    查看>>
    mysql中floor函数的作用是什么?
    查看>>
    MySQL中group by 与 order by 一起使用排序问题
    查看>>
    mysql中having的用法
    查看>>
    MySQL中interactive_timeout和wait_timeout的区别
    查看>>
    mysql中int、bigint、smallint 和 tinyint的区别、char和varchar的区别详细介绍
    查看>>
    mysql中json_extract的使用方法
    查看>>
    mysql中json_extract的使用方法
    查看>>
    mysql中kill掉所有锁表的进程
    查看>>
    mysql中like % %模糊查询
    查看>>