Bob is preparing to pass IQ test. The most frequent task in this test is to find out which one of the given n numbers differs from the others. Bob observed that one number usually differs from the others in evenness. Help Bob — to check his answers, he needs a program that among the given n numbers finds one that is different in evenness.

Input

The first line contains integer n (3 ≤ n ≤ 100) — amount of numbers in the task. The second line contains n space-separated natural numbers, not exceeding 100. It is guaranteed, that exactly one of these numbers differs from the others in evenness.

Output

Output index of number that differs from the others in evenness. Numbers are numbered from 1 in the input order.

Examples

Input

5
2 4 7 8 10


Output

3


Input

4
1 2 1 1


Output

2
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.*;
import java.util.*;

/**
 *
 * @author N-AssassiN
 */
public class Main {

    private static BufferedReader reader;
    private static BufferedWriter out;
    private static StringTokenizer tokenizer;
    //private final static String filename = "filename";

    private static void init(InputStream input, OutputStream output) {
        reader = new BufferedReader(new InputStreamReader(input));
        out = new BufferedWriter(new OutputStreamWriter(output));
        //reader = new BufferedReader(new FileReader(filename + ".in"));
        //out = new BufferedWriter(new FileWriter(filename + ".out"));
        tokenizer = new StringTokenizer("");
    }

    private static String nextLine() throws IOException {
        return reader.readLine();
    }

    private static String next() throws IOException {
        while (!tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(nextLine());
        }
        return tokenizer.nextToken();
    }

    private static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }

    private static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    private static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        init(System.in, System.out);
        int n = nextInt();
        //long startTime = System.currentTimeMillis();
        int[] data = new int[n];
        int ans = 0;
        int countEven = 0;
        for (int i = 0; i < n; i++) {
            data[i] = nextInt();
            if (data[i] % 2 == 0) {
                countEven++;
            }
        }
        if (countEven == 1) {
            for (int i = 0; i < n; i++) {
                if (data[i] % 2 == 0) {
                    out.write((i + 1) + "\n");
                    break;
                }
            }
        } else {
            for (int i = 0; i < n; i++) {
                if (data[i] % 2 != 0) {
                    out.write((i + 1) + "\n");
                    break;
                }
            }
        }
        //long runTime = System.currentTimeMillis() - startTime;
        //out.write(runTime + "\n");
        out.flush();
    }
}