#include <bits/stdc++.h>
using namespace std;
#define _ <<" "<<
#define sz(x) ((int) (x).size())
typedef pair<int, int> pii;
typedef long long ll;
const int maxn = 5e5 + 5;


int n, m;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    vector<pii> A(n+1);
    int sum = 0;
    for (int i = 1;i <= n; ++i) {
        cin >> A[i].first;
        sum += A[i].first;
        A[i].second = i;
    }
    sort(A.begin()+1,A.end());
    if (A[n].first > sum-A[n].first) {
        cout << "impossible\n";
        return 0;
    }
    for (int i = n;i >= 1; --i) cout << A[i].second << " ";
    cout << endl;
    return 0;
}