#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
using namespace std;
using std::cout;
using std::cin;
using std::endl;
using ll=long long;
using ld=long double;
ll ILL=2167167167167167167;
const int INF=2100000000;
const ll mod=998244353;
#define rep(i,a,b) for (ll i=a;i<b;i++)
#define all(p) p.begin(),p.end()
template<class T> using _pq = priority_queue<T, vector<T>, greater<T>>;
template<class T> ll LB(vector<T> &v,T a){return lower_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> ll UB(vector<T> &v,T a){return upper_bound(v.begin(),v.end(),a)-v.begin();}
template<class T> bool chmin(T &a,const T &b){if(a>b){a=b;return 1;}else return 0;}
template<class T> bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}else return 0;}
template<class T> void So(vector<T> &v) {sort(v.begin(),v.end());}
template<class T> void Sore(vector<T> &v) {sort(v.begin(),v.end(),[](T x,T y){return x>y;});}
void yneos(bool a){if(a) cout<<"Yes\n"; else cout<<"No\n";}
template<class T> void vec_out(vector<T> &p){for(int i=0;i<(int)(p.size());i++){if(i) cout<<" ";cout<<p[i];}cout<<"\n";}
template<class T> T min(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmin(ans,x);return ans;}
template<class T> T max(vector<T> &a){assert(!a.empty());T ans=a[0];for(auto &x:a) chmax(ans,x);return ans;}
template<class T> T sum(vector<T> &a){assert(!a.empty());T ans=a[0]-a[0];for(auto &x:a) ans+=x;return ans;}



void solve();
// oddloop
int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	
	int t=1;
	//cin>>t;
	rep(i,0,t) solve();
}

void solve(){
	int N;
	cin>>N;
	vector<int> K(N);
	rep(i,0,N) cin>>K[i];
	vector<vector<int>> stones(N);
	rep(i,0,N){
		int t;
		cin>>t;
		stones[i].resize(t);
		rep(j,0,t) cin>>stones[i][j];
		So(stones[i]);
	}
	int l=1,r=1e9+7;
	while(r-l>1){
		int med=(r+l)/2;
		int ok=0;
		int ind1=0,ind2=0;
		int A=-1;
		vector<int> p,q;
		rep(i,0,N){
			int b=LB(stones[i],med);
			int s=stones[i].size();
			if(b==0) q.push_back(s),chmax(A,s);
			else p.push_back(s-b);
		}
		Sore(p);
		So(q);
		for(int i=N-1;i>=0;i--){
			if(p[ind1]>=K[i]){
				ok=1;
				break;
			}
			if(ind2!=(int)(q.size())&&A>=K[i]){
				ok=1;
				break;
			}
			if(ind2!=(int)(q.size())) ind2++;
			else if(p[ind1]+1<K[i]) break;
			else ind1++;
		}
		if(ok) l=med;
		else r=med;
	}
	cout<<l<<"\n";
}