#include <iostream>
#include <string>
#include <iomanip>
#include <vector>
using namespace std;

int main()
{
	int n, k, x; cin >> n >> k >> x;
	vector<int>a(k), b(k);
	int question=x-1;
	for (int i = 0; i < k; i++) {
		if (i == x - 1) {
			char ques; cin >> ques >> ques;
			continue;
		}
		cin >> a[i] >> b[i];
	}
	vector<int>goal(n);
	for (int i = 0; i < n; i++)cin >> goal[i];

	vector<int>prev;
	for (int i = 1; i <= n; i++)prev.push_back(i);
	for (int i = 0; i < question; i++) {
		swap(prev[a[i] - 1], prev[b[i] - 1]);
	}
	for (int i = k - 1; i > question; i--) {
		swap(goal[a[i] - 1], goal[b[i] - 1]);
	}
	vector<int>ans;
	for (int i = 0; i < n; i++) {
		if (prev[i] != goal[i])ans.push_back(i);
	}

	if (ans[0] > ans[1])swap(ans[0], ans[1]);
	cout << ans[0]+1 <<" "<< ans[1]+1 << endl;
}