#include<bits/stdc++.h>
using namespace std;
const int maxn=100005;
struct change {int x,y;} c[maxn];
int n,k,x,a[maxn],b[maxn];
int main() {
    ios::sync_with_stdio(false); cin.tie(0);
    freopen("cup.in","r",stdin); freopen("cup.out","w",stdout);
    cin>>n>>k>>x;
    for(int i=1;i<=k;i++) {
        if(i==x) {char aa,bb;cin>>aa>>bb;}
        else cin>>c[i].x>>c[i].y;
    } 
    for(int i=1;i<=n;i++) {
        cin>>b[i];
        a[i]=i;
    }
    for(int i=1;i<x;i++) swap(a[c[i].x],a[c[i].y]);
    for(int i=k;i>x;i--) swap(b[c[i].x],b[c[i].y]);
    int ans1,ans2,flg=true;
    for(int i=1;i<=n;i++) {
        if(a[i]!=b[i]) {
            if(flg) {flg=false,ans1=i;}
            else {ans2=i;break;}
        }
    }
    cout<<ans1<<' '<<ans2<<'\n';
    return 0;
}