using System;

public class Program

{

    public static void Main()

    {

        int[] integers = new[]{5, 3, 7, 8,9};

        int target = 11;

        for(int i = 0; i < integers.Length; i++){

            for(int j = 0; j < integers.Length; j++){

                if(i != j){

                    if(integers[i] + integers[j] == target){

                        Console.WriteLine(i + " " + j);

                        return;

                    }

                }

            }

        }

    }

}