CF855A.Tom Riddle's Diary

普及/提高-

通过率:0%

AC君温馨提醒

该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。

题目描述

Harry Potter is on a mission to destroy You-Know-Who's Horcruxes. The first Horcrux that he encountered in the Chamber of Secrets is Tom Riddle's diary. The diary was with Ginny and it forced her to open the Chamber of Secrets. Harry wants to know the different people who had ever possessed the diary to make sure they are not under its influence.

He has names of nn people who possessed the diary in order. You need to tell, for each person, if he/she possessed the diary at some point before or not.

Formally, for a name sis_{i} in the ii -th line, output "YES" (without quotes) if there exists an index jj such that si=sjs_{i}=s_{j} and j<i , otherwise, output "NO" (without quotes).

输入格式

First line of input contains an integer nn ( 1<=n<=1001<=n<=100 ) — the number of names in the list.

Next nn lines each contain a string sis_{i} , consisting of lowercase English letters. The length of each string is between 11 and 100100 .

输出格式

Output nn lines each containing either "YES" or "NO" (without quotes), depending on whether this string was already present in the stream or not.

You can print each letter in any case (upper or lower).

输入输出样例

  • 输入#1

    6
    tom
    lucius
    ginny
    harry
    ginny
    harry
    

    输出#1

    NO
    NO
    NO
    NO
    YES
    YES
    
  • 输入#2

    3
    a
    a
    a
    

    输出#2

    NO
    YES
    YES
    

说明/提示

In test case 11 , for i=5i=5 there exists j=3j=3 such that si=sjs_{i}=s_{j} and j<i , which means that answer for i=5i=5 is "YES".

首页