#include<bits/stdc++.h>
using namespace std;
#define int long long
vector<vector<int>> g;
signed main(){
int n , m;
cin>>n>>m;
g.resize(n+1);
for(int i = 0 ; i < m; i++){
int u , v;
cin>>u>>v;
g[u].push_back(v);
g[v].push_back(u);
}
int k;
cin>>k;
vector<int> a(n) , b(n);
for(int i = 0 ; i < k ;i++){
cin>>a[i]>>b[i];
}
cout<<a[0];
}
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