CPE205-HW5

import java.util.Scanner;
public class Source {
    public static void main (String[] args){
        int x = -1, y = 0, tmp;
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int a[] = new int[n];

        for(int i = 0 ; i < n ; i++){
            tmp = sc.nextInt();
            if(tmp > 0)
                a[i] = tmp;
        }

        for(int i = 0 ; i < n ; i++){
            for(int j = 0 ; j < n ; j++){
                if(a[i] + a[j] == k && a[i] != a[j]){
                    x = a[j];
                    y = a[i];
                }
            }
        }

        if(x == -1)
            System.out.println(x);
        else
            System.out.println(x+" "+y);
    }
}