import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        if(!sc.hasNextInt()){
            System.out.println("No pairs found");
            return;
        }
        int n=sc.nextInt();
        int[] arr=new int[n];
        for(int i=0;i<n;i++){
            arr[i]=sc.nextInt();
        }
        int target=5;
        int target=sc.nextInt();
        for(int i=0;i<n;i++){
            for(int j=i+1;j<n;j++){
            if(arr[i]+arr[j]==target){
                       System.out.println("("+arr[i]+", "+arr[j]+")");
                       }
               }
           }
    } 
}