Help me in solving CNDY problem

My issue

please help me to understand the question

My code

#include <stdio.h>

int main(void) {
	// your code goes here

}


Problem Link: Candies Practice Coding Problem - CodeChef

@vardhankorada2
plzz refer my c++ code for better understanding of the logic

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

int main()
{
    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;
        int size = 2 * n;
        int a[size];
        for (int i = 0; i < size; i++)
        {
            cin >> a[i];
        }

        sort(a,a+size);
        string s = "YES";
        
        for (int i = 0; i < size-2; i++)
        {
            if(a[i]==a[i+1] && a[i+1]==a[i+2]){
                s="NO";
            }
        }
        cout<<s<<"\n";
        
    }
    return 0;
}