#include <iostream>
#include <vector>
#include <set>
#include <algorithm>
#include <iterator>
using namespace std;
vector<long long> v;
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    long long n;
    cin >> n;
    v.resize(n);
    for(int i = 0; i < n; i++) cin >> v[i];
    sort(v.begin(), v.end());
    long long m = v[n - 1];
    set<long long> dp;
    for(int i = 0; i < n; i++) dp.insert(m - v[i]);
    //cout << *dp.begin;
    //while(*dp.begin() != *dp.end())
}

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