A_Holiday_Of_Equality.cpp

#include <bits/stdc++.h>
using namespace std;

int main()
{
    int n;
    cin >> n;
    int arr[n];
    int maxi = 0;
    long long answer = 0;
    for (int i = 0; i < n; i++)
    {
        cin >> arr[i];
        maxi = max(arr[i], maxi);
    }
    for (int i = 0; i < n; i++)
    {
        answer += maxi - arr[i];
    }111
    cout << answer << endl;

    return 0;
}