#include<bits/stdc++.h>

using namespace std;
typedef unsigned int uint;
typedef long long int ll;
typedef unsigned long long int ull;

#define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;
#define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;
#define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;}
#define ALL(v) (v).begin(),(v).end()
#define BIGINT 0x7FFFFFFF
#define E107 1000000007
void printbit(int u){if(u==0)cout<<0;else{int s=0,k=0;for(;0<u;u>>=1,k++)s=(s<<1)|(u&1);for(;0<k--;s>>=1)cout<<(s&1);}}

#define TIME chrono::system_clock::now()
#define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count())

template<typename T1,typename T2>
ostream& operator <<(ostream &o,const pair<T1,T2> p){o<<"("<<p.first<<":"<<p.second<<")";return o;}

int data[100005];
//int idx[100005];

int query[100005][2];
int fin[100005];

int main(){
    int i,j,k,l;
    int n,m,x;
    
    cin>>n>>m>>x;
    
    for (i=1;i<=n;i++)
        data[i]=i;
    
    for(i=0;i<x-1;i++){
        scanf("%d%d",&j,&k);
        swap(data[j],data[k]);
    }
    
    cin.ignore(5);
    
    for (i++;i<m;i++){
        scanf("%d%d",&j,&k);
        query[i][0]=j;
        query[i][1]=k;
    }
    for (i=1;i<=n;i++){
        scanf("%d",&j);
        fin[i]=j;
    }
    
    for (i=m-1;x<=i;i--){
        swap(fin[query[i][0]],fin[query[i][1]]);
    }
    bool resultf=false;
    for (i=1;i<=n;i++){
        if (data[i]!=fin[i]){
            if (!resultf){
                resultf=true;
                cout << i << " ";
            }else{
                cout << i << endl;
                return 0;
            }
        }
    }

    return 1;
}