// TheTrip.cpp : Defines the entry point for the console application.
//
 
#include <vector>
#include <stdio.h>
#include <iostream>
#include <math.h>
#include <iomanip>
#include <string>
using namespace std;
 
double smoother(double raw_ave)
{
    string::size_type n;
    string raw_string = to_string(raw_ave);
    n = raw_string.find(".");
    string decimal = raw_string.substr(n);
 
    double new_ave = 0;
 
    if (decimal.length() >= 5)
    {
 
        string cmp = decimal.substr(0, 5);
        if (cmp == ".5000")
        {
            new_ave = floor(raw_ave);
        }
        else if (cmp == ".3333")
        {
            new_ave = floor(raw_ave);
        }
        else if (cmp == ".6666")
        {
            new_ave = floor(raw_ave);
            new_ave = new_ave + 0.66;
        }
        else
        {
            new_ave = raw_ave;
        }
    }
    else
    {
        new_ave = raw_ave;
    }
 
    return new_ave;
}
 
string calculate(int n, vector<double> v)
{
 
    double sum = 0;
 
    for (int i = 0; i < n; i++)
    {
        v[i] = v[i] * 100;
        sum += v[i];
    }
 
    double ave = sum / (double)n;
 
    double new_ave = smoother(ave);
 
    double result = 0;
    for (double diff : v)
    {
        if (diff < new_ave)
        {
            result += new_ave - diff;
        }
    }
 
    string wholeResult = to_string((int)result);
    if (wholeResult.length() == 1)
    {
        wholeResult = "00" + wholeResult;
    }
    else if (wholeResult.length() == 2)
    {
        wholeResult = "0" + wholeResult;
    }
    string decimal = wholeResult.substr(wholeResult.length() - 2);
    wholeResult = wholeResult.substr(0, wholeResult.length() - 2);
 
 
    cout << "$" << wholeResult << "." << decimal << endl;
 
    string output;
    output = "$" + wholeResult + "." + decimal;
    return output;
}
int main()
{
    int n = 0;
    while (cin >> n)
    {
        if (n == EOF) break;
        if (n <= 0) break;
        vector<double> v;
        int counter = n;
        while (counter > 0)
        {
            double f;
            cin >> f;
            v.push_back(f);
            counter--;
        }
        calculate(n, v);
    }
    return 0;
}
 

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

3
10.00
20.00
30.00
4
15.00
15.01
3.00
3.01
5
5000.00
11.11
11.11
11.11
11.11
3
0.01
0.03
0.03
4
25.00
25.00
25.00
28.00
3
10.01
15.25
18.96
4
25.03
25.00
25.00
25.00
21 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.01 
0.03 
12 
123.12 
6.13 
9.44 
89.08 
278.78 
223.78 
78.45 
912.89 
554.76 
547.57 
1781.89 
907.07 
0