Codeforces 1624A. Plus One on the Subset Solution

   

Solution in C++: 

///******Bismillahir-Rahmanir-Rahim******///

///AH Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

#include <bits/stdc++.h>

using namespace std;

int main()

{

    int t,n,i;

    cin>>t;

    while(t--)

    {

        cin>>n;

        int a[n+9];

        for(i=0; i<n; i++)

            cin>>a[i];

    sort(a,a+n);

    cout<<a[n-1]-a[0]<<endl;

    }

    return 0;

}