#include <bits/stdc++.h>
#include <math.h>
//in the name of god,aka allah
//** har vaght m2 ghabool shodi javabetoo midam (radal) **
#pragma GCC optimize("unroll-loops")
using namespace std;
#define pi pair<ll , ll>
#define pii pair<long long , pair<long long , long long>>
const int maxm = 5e5 + 6;
const long long mod = 998244353;
typedef long long ll;
#define pb push_back
#define fi first
#define se second
ll l,r,mid;
ll n,m;
ll dis[maxm] , sum[maxm];
bool isval(int mid){
//cout << mid <<" " << mid*mid-mid <<endl;
if (((mid-1)*mid)/2 < m) return 0;
return 1;
}
ll darage[maxm] , ss , mm;
queue<int> q;
vector<ll> g[maxm] , z[maxm];
ll sath[maxm];
bool vis[maxm] , gos[maxm];
ll pedaret[maxm];
ll get_par(ll v){
if (pedaret[v]==v) return v;
return pedaret[v] = get_par(pedaret[v]);
}
void merge(ll r , ll q){
if (get_par(r)!=get_par(q))l+=max(darage[r],darage[q])*1ll*sath[r]*1ll*sath[q];
r = get_par(r) , q = get_par(q);
if (r!=q){
if (sath[r]<sath[q]) swap(r,q);
pedaret[q] = r;
sath[r] += sath[q];
}
return ;
}
ll pars1[maxm] , pars2[maxm];
vector<ll> se[maxm];
set<ll> st , wtf , ajab;
ll dp[maxm];
ll rp[maxm];
pi w[maxm],ww[maxm];
//ll rw[maxm][maxm];
set<ll> ts[maxm] , jav[maxm];
ll rgh[maxm] , lft[maxm];
ll pw(ll x , ll y){
ll ans = 1 , ok = x;
while (y){
if (y%2) ans *= ok;
ans %= mod;
ok *= ok;
ok %= mod;
y/=2;
}
return ans;
}
ll solve(ll x){
for (int i=1; i<=n; i++) vis[i] = 0 , darage[i] = mod , gos[i] = 0;
ll ans = 1;
queue<int> qu;
qu.push(x);
darage[x] = 1;
ll tr = 0;
vis[x] = 1;
while (qu.size()){
auto x = qu.front();
qu.pop();
for (auto u : g[x]){
if (!vis[u]){
vis[u] = 1 , darage[u] = darage[x] + 1 , gos[x] = 1 , qu.push(u) , ans++;
}
}
}
for (int i=1; i<=n; i++) tr += darage[i];
if (ans!=n) return mod*mod;
return tr;
}
int main(){
ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
cin >> n;
for (int i=1; i<=n; i++){
cin >>l;
for (int j=1; j<=l; j++){
cin >>r;
g[r].pb(i);
}
}
mid = mod * mod;
for (int i=1; i<=n; i++){
mid = min(mid , solve(i));
}
cout<<mid<<endl;
}
