import java.util.ArrayList;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		int K = scan.nextInt();
		int X = scan.nextInt() - 1;
		int[]A = new int[K];
		int[]B = new int[K];
		for(int i = 0; i < K; i++) {
			if(i == X) {
				scan.next();
				scan.next();
				A[i] = 0;
				B[i] = 0;
			}else {
				A[i] = scan.nextInt() - 1;
				B[i] = scan.nextInt() - 1;
			}
		}
		int[]C = new int[N];
		int[]C1 = new int[N];
		for(int i = 0; i < N; i++) {
			C[i] = scan.nextInt();
			C1[i] = i + 1;
		}
		scan.close();
		for(int i = 0; i < X; i++) {
			swap(C1, A[i], B[i]);
		}
		for(int i = K - 1; i > X; i--) {
			swap(C, A[i], B[i]);
		}

		ArrayList<Integer> list = new ArrayList<Integer>();
		for(int i = 0; i < N; i++) {
			if(C[i] != C1[i]) {
				list.add(i + 1);
			}
		}
		System.out.println(list.get(0) + " " + list.get(1));
	}
	static void swap(int[]A, int i, int j) {
		int t = A[j];
		A[j] = A[i];
		A[i] = t;
	}
}