BDYFRND

BDYFRND.cpp

#include<bits/stdc++.h>
#include<map>

using namespace std;
int main()
{
	int n,i,t;
	long long int x;
	map <long long int,int > m;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d",&n);
		for(i=0;i<n;i++)
		{
			cin>>x;
			m[x]++;
			if(m[x]>1)
			{
				printf("YES\n");

			}
			else
			{
				printf("NO\n");
			}
		}
	}
}

Description

Buddy is standing at the door of his classroom. Initially class is empty. There are N students to come. At every instant, a student enters the class and wishes to be seated with a student who has exactly the same number of candies. For each student, Buddy shouts YES if such a student is found, NO otherwise.

Input Format

First line contains an integer T denoting number of test cases.
Next line contains an integer N denoting number of students.
Second line of each test case contains N integers separated by space where Ai number denotes number of candies ith student is having.

Output Format

For each student print YES or NO in new line.

Constraints

1 ≤ T ≤ 105
1 ≤ N ≤ 105
1 ≤ Sum of N ≤ 105
1 ≤ Ai ≤ 1018

Sample Input

1
5
3 2 9 11 2

Sample Output

NO
NO
NO
NO
YES

I used this code in terminal and compiled it .its working propeerly but still the online compiler shows me error. why ?