#include <iostream>
#include <vector>
#include <cstring>
#include <string>
#include <algorithm>
#include <iomanip>
#include <cmath>
#include <cassert>
using namespace std;

int A[100000];
int B[100000];
int C1[100000];
int C2[100000];

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int N, K, X;
	cin >> N >> K >> X;
	X--;
	for(int i = 0; i < K; i++) {
		if(i == X) {
			char c;
			cin >> c >> c;
			continue;
		}
		cin >> A[i] >> B[i];
		A[i]--, B[i]--;
	}

	for(int i = 0; i < N; i++) {
		C1[i] = i + 1;
		cin >> C2[i];
	}

	for(int i = 0; i < X; i++) {
		swap(C1[A[i]], C1[B[i]]);
	}
	for(int i = K - 1; i > X; i--) {
		swap(C2[A[i]], C2[B[i]]);
	}

	vector<int> ans;
	for(int i = 0; i < N; i++) {
		if(C1[i] != C2[i]) ans.push_back(i + 1);
	}

	cout << ans[0] << " " << ans[1] << endl;
}