Help me in solving CNDY problem

help
,
1

My issue

find my mistake

My code

#include <bits/stdc++.h>
using namespace std;

int main() {
	// your code goes here
	int t;
	cin>>t;
	while(t--){
	    int n;
	    cin>>n;
        int a[2*n];
        int r=0;
        int l=0;
        for(int i=0;i<(2*n);i++){
            cin>>a[i];
        }
        for(int j=0;j<(2*n);j++){
            for(int k=0;k<(2*n);k++){
                
                if(a[j]==a[k]){
                    l++;
                }
            }
            
        }
        
        if(l<=(2*n)+2){
            cout<<"Yes"<<endl;
        }
        else{
            cout<<"No"<<endl;
        }
        
        	
	}
	return 0;

}

Problem Link: Candies Practice Coding Problem