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
    MySQL5.7.19-win64安装启动
    查看>>
    mysql5.7.19安装图解_mysql5.7.19 winx64解压缩版安装配置教程
    查看>>
    MySQL5.7.37windows解压版的安装使用
    查看>>
    mysql5.7免费下载地址
    查看>>
    mysql5.7命令总结
    查看>>
    mysql5.7安装
    查看>>
    mysql5.7性能调优my.ini
    查看>>
    MySQL5.7新增Performance Schema表
    查看>>
    Mysql5.7深入学习 1.MySQL 5.7 中的新增功能
    查看>>
    Webpack 之 basic chunk graph
    查看>>
    Mysql5.7版本单机版my.cnf配置文件
    查看>>
    mysql5.7的安装和Navicat的安装
    查看>>
    mysql5.7示例数据库_Linux MySQL5.7多实例数据库配置
    查看>>
    Mysql8 数据库安装及主从配置 | Spring Cloud 2
    查看>>
    mysql8 配置文件配置group 问题 sql语句group不能使用报错解决 mysql8.X版本的my.cnf配置文件 my.cnf文件 能够使用的my.cnf配置文件
    查看>>
    MySQL8.0.29启动报错Different lower_case_table_names settings for server (‘0‘) and data dictionary (‘1‘)
    查看>>
    MYSQL8.0以上忘记root密码
    查看>>
    Mysql8.0以上重置初始密码的方法
    查看>>
    mysql8.0新特性-自增变量的持久化
    查看>>
    Mysql8.0注意url变更写法
    查看>>