import java.util.Arrays;
import java.util.LinkedList;
import java.util.Scanner;

public class Main {
	
	public static long MOD = 1000000007;
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		final int N = sc.nextInt();
		final int K = sc.nextInt();
		final int X = sc.nextInt() - 1;
		
		int[][] numbers = new int[K][2];
		
		for(int i = 0; i < K; i++){
			if(i == X){ 
				sc.next(); sc.next();
				numbers[i][0] = numbers[i][1] = -1;
			}else{
				numbers[i][0] = sc.nextInt() - 1;
				numbers[i][1] = sc.nextInt() - 1;
			}
		}
		
		int[] forward = new int[N];
		for(int i = 0; i < N; i++){ forward[i] = i; }
		int[] backward = new int[N];
		for(int i = 0; i < N; i++){ backward[i] = sc.nextInt() - 1; }
		
		for(int i = 0; i < X; i++){
			final int a = numbers[i][0];
			final int b = numbers[i][1];
			
			{
				int tmp = forward[a];
				forward[a] = forward[b];
				forward[b] = tmp;
			}
		}
		for(int i = K - 1; i > X; i--){
			final int a = numbers[i][0];
			final int b = numbers[i][1];
			
			{
				int tmp = backward[a];
				backward[a] = backward[b];
				backward[b] = tmp;
			}
		}
		
		//System.out.println(Arrays.toString(forward));
		//System.out.println(Arrays.toString(backward));
		
		int diff_A = -1, diff_B = -1;
		for(int i = 0; i < N; i++){
			if(forward[i] == backward[i]){ continue; }
			
			if(diff_A < 0){ 
				diff_A = i + 1;
			}else{
				diff_B = i + 1;
			}
		}
		System.out.println(diff_A + " " + diff_B);
	}
}