Codeforces 1343B B. Balanced Array Solution

Problem Link : https://codeforces.com/contest/1343/problem/B

Solution in c++:

///La ilaha illellahu muhammadur rasulullah
///******Bismillahir-Rahmanir-Rahim******///
///Abul Hasnat  Tonmoy
///Department of CSE,23rd batch
///Islamic University,Bangladesh
#include<iostream>
using namespace std;
int main()
{
    int t,n,i,e,c,co,s,se,o;
    cin>>t;
    while(t--)
    {
       co=0,c=0,s=0,se=0;
        cin>>n;
        if(n%4==0)
        {
            cout<<"YES"<<endl;
            e=n/2;
            o=n/2;
            for(i=0;; i=i+2)
            {
                c++;
                if(c>e)
                    break;
                else
                {
                    cout<<i+2<<" ";
                    se=se+(i+2);
                }
            }
            for(i=-1;; i=i+2)
            {
                co++;
                if(co+1>o)
                    break;
                else
                {
                    cout<<i+2<<" ";
                    s=s+(i+2);
                }
            }
            cout<<se-s<<endl;
        }
        else
            cout<<"NO"<<endl;
    }
}