#include <iostream>
using namespace std;

int main() {
    int n;
    cin >> n;
    int max = -10000000001;
    int maxNum = -1;
    int zero = -1;
    int countMinus = 0;
    int x;
    for(int i = 1; i < n + 1; ++i) {
        cin >> x;
        if(x == 0)
            zero = i;
        else if (x < 0) {
            ++countMinus;
            if(x > max){
                max = x;
                maxNum = i;
            }
        }
    }
    for(int i = 1; i < n + 1; ++i) {
        if(i != zero && (countMinus % 2 == 0 || i != maxNum)) {
            cout << i << endl;
        }
    }

    return 0;
}