#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int, int>
#define pll pair<ll, ll>
#define ff first
#define ss second
#define vi vector<int>
#define vl vector<ll>
#define vii vector<pii>
#define vll vector<pll>
#define FOR(i,N) for(i=0;i<(N);++i)
#define FORe(i,N) for(i=1;i<=(N);++i)
#define FORr(i,a,b) for(i=(a);i<(b);++i)
#define FORrev(i,N) for(i=(N);i>=0;--i)
#define F0R(i,N) for(int i=0;i<(N);++i)
#define F0Re(i,N) for(int i=1;i<=(N);++i)
#define F0Rr(i,a,b) for(ll i=(a);i<(b);++i)
#define F0Rrev(i,N) for(int i=(N);i>=0;--i)
#define all(v) (v).begin(),(v).end()
#define dbgLine cerr<<" LINE : "<<__LINE__<<"\n"
#define ldd long double
using namespace std;
const int Alp = 26;
const int __PRECISION = 9;
const int inf = 1e9 + 8;
const ldd PI = acos(-1);
const ldd EPS = 1e-7;
const ll MOD = 1e9 + 7;
const ll MAXN = 2e5 + 5;
const ll ROOTN = 320;
const ll LOGN = 18;
const ll INF = 1e18 + 1022;
int N, ans;
vi sub[5010];
inline int set_boss(int s)
{
bool vis[N+1];
int dep[N+1], tmp = 0;
queue<int> Q;
F0Re(i, N)
vis[i] = false;
Q.push(s);
vis[s] = true;
dep[s] = 1;
while(!Q.empty())
{
int a = Q.front();
Q.pop();
tmp += dep[a];
for(int b : sub[a])
if(!vis[b])
{
vis[b] = true;
dep[b] = dep[a] + 1;
Q.push(b);
}
}
F0Re(i, N)
if(!vis[i])
return inf;
return tmp;
}
signed main()
{
/*
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
*/
ans = inf;
cin>>N;
int M, j;
F0Re(i, N)
{
cin>>M;
while(M--)
cin>>j, sub[j].pb(i);
}
F0Re(i, N)
ans = min(ans, set_boss(i));
cout<<ans;
return 0;
}
/*
4
1 4
3 1 3 4
2 1 2
1 3
*/
