codeforces 681A A Good Contest

最新推荐文章于 2024-12-30 20:03:52 发布

原创最新推荐文章于 2024-12-30 20:03:52 发布 · 700 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#瞎搞

ACM算法_瞎搞专栏收录该内容

3 篇文章

订阅专栏

本文介绍了一个简单程序，用于分析Codeforces用户在比赛中是否超越了红名选手且该选手赛后评级提升，以此判断参赛者的表现是否良好。

点击打开链接

Codeforces user' handle color depends on his rating — it is red if his rating is greater or equal to 2400; it is orange if his rating is less than 2400 but greater or equal to 2200, etc. Each time participant takes part in a rated contest, his rating is changed depending on his performance.

Anton wants the color of his handle to become red. He considers his performance in the rated contest to be good if he outscored some participant, whose handle was colored red before the contest and his rating has increased after it.

Anton has written a program that analyses contest results and determines whether he performed good or not. Are you able to do the same?

Input

The first line of the input contains a single integer n (1 ≤ n ≤ 100) — the number of participants Anton has outscored in this contest .

The next n lines describe participants results: the i-th of them consists of a participant handle namei and two integers beforei and afteri( - 4000 ≤ beforei, afteri ≤ 4000) — participant's rating before and after the contest, respectively. Each handle is a non-empty string, consisting of no more than 10 characters, which might be lowercase and uppercase English letters, digits, characters «_» and «-» characters.

It is guaranteed that all handles are distinct.

Output

Print «YES» (quotes for clarity), if Anton has performed good in the contest and «NO» (quotes for clarity) otherwise.

   Examples
 

     input
   
3
Burunduk1 2526 2537
BudAlNik 2084 2214
subscriber 2833 2749

     output
   
YES

     input
   
3
Applejack 2400 2400
Fluttershy 2390 2431
Pinkie_Pie -2500 -2450

     output
   
NO

Note

In the first sample, Anton has outscored user with handle Burunduk1, whose handle was colored red before the contest and his rating has increased after the contest.

In the second sample, Applejack's rating has not increased after the contest, while both Fluttershy's and Pinkie_Pie's handles were not colored red before the contest.

题意看不懂，随便写的，一次竟然过了，百度翻译，谷歌翻译什么的也看不懂，有明白什么题意的，评论一下。

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    char s[15];
    int a,b;
    cin>>n;
    bool flag=false;
    for(int i=0;i<n;i++)
    {
        cin>>s>>a>>b;
        if(a>=2400&&b>=2400&&a<b)
            flag=true;
    }
    if(flag)
        cout<<"YES"<<endl;
    else
        cout<<"NO"<<endl;
    return 0;
}