#include <fstream>
#include <math.h>
#include <vector>
#include <set>
#include <algorithm>
#include <cstring>
//#include <unordered_map>
#include <iomanip>
#include <time.h>
#include <stdio.h>
#include <bitset>
#include <map>
#include <ctime>
#include <stdlib.h>
#include "minmax.h"
#define MAX 500000000000
//#include <iostream>
#include <windows.h>
#include <deque>
//#include "PEZai.h"
//#include <Tlhelp32.h>
using namespace std;
using namespace MinMax;
ifstream cin("jocul.in");
ofstream cout("jocul.out");
//ifstream cin("indep.in");
//ofstream cout("indep.out");
int x[104];
int main()
{
    int n, sum = 0, k, bsum = 0;
    cin >> n;
    for(int i = 0; i < n; i++){
        cin >> x[i];
        sum += x[i];
    }
    sort(x, x + n);
    k = x[n - 1];
    for(int i = 0; i < n; i++)
        bsum += k - x[i];
    while(bsum <= sum)
    {
        bsum += n;
    }
    cout << bsum;
}