#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,k,x,a[123456],b[123456],p[123456],q[123456],s,t;
signed main(){
//	freopen("cup.in","r",stdin);
//	freopen("cup.out","w",stdout);
	scanf("%lld%lld%lld",&n,&k,&x);
	for(int i=1;i<=k;i++){
		if(i==x){
			char ch1,ch2;
			cin>>ch1>>ch2;
		}
		else scanf("%lld%lld",&a[i],&b[i]);
	}
	for(int i=1;i<=n;i++)p[i]=i;
	for(int i=1;i<=n;i++)scanf("%lld",&q[i]);
	for(int i=1;i<x;i++){
		int tmp=p[a[i]];
		p[a[i]]=p[b[i]];
		p[b[i]]=tmp;
	}
	for(int i=k;i>x;i--){
		int tmp=q[a[i]];
		q[a[i]]=q[b[i]];
		q[b[i]]=tmp;
	}
	for(int i=1;i<=n;i++){
		if(p[i]!=q[i]){
			if(s==0)s=i;
			else t=i;
		}
	}
	printf("%lld %lld\n",s,t);
	return 0;
}