UVa 11364 Parking

Code：

#include<stdio.h>

#include<stdlib.h>

#include<iostream>

#include<algorithm>

#include<string.h>

#include<map>

#include<vector>

using namespace std;

vector<int> v;

int main()

{

    int cas;

    cin>>cas;

    while(cas--)

    {

        int n,minn=10000000,maxn=0,k;

        cin>>n;

        for(int i=0;i<n;i++)

        {

            cin>>k;

            minn=min(k,minn);

            maxn=max(maxn,k);

        }

        int ans=(maxn-minn)*2;

        cout<<ans<<endl;

    }

}