Go: package main
import (
	"fmt"
	"bufio"
	"os"
	"bytes"
	"strconv"
	"strings"
)

func nextInt(scanner *bufio.Scanner) int {
	scanner.Scan()
	num , _ :=  strconv.Atoi(scanner.Text())
	return num
}


func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Split(bufio.ScanWords)

	N := nextInt(scanner)
	var A [][]int = make([][]int, N)
	for i:=0; i<N; i++ {
		A[i] = make([]int, N)
	}
	for i:=0; i<N; i++{
		idx := nextInt(scanner)
		cnt := nextInt(scanner)
		for j:=0; j<cnt; j++ {
			node := nextInt(scanner)
			A[idx-1][node-1] = 1
		}
	}
	var outBuffer bytes.Buffer
	for i:=0; i<N; i++ {
		outBuffer.WriteString(strings.TrimRight(fmt.Sprintf("%v",A[i])[1:], "]") + "\n")
	}
	fmt.Printf("%s", outBuffer.String())
}

C++: #include <iostream>
#include <string>
#include <vector>

using namespace std;

void to_adjacent_matrix(vector<vector<int> >& adjacent_list, vector<vector<int> >& adjacent_matrix);

int main()
{
    int n;
    cin >> n;

    vector<vector<int> > vertex(n, vector<int>(n, -1));
    for (int i = 0; i < n; ++i) {
        int u, k;
        cin >> u >> k;

        for (int j = 0; j < k; ++j)
            cin >> vertex[i][j];
    }

    vector<vector<int> > adjacent(n, vector<int>(n, 0));
    to_adjacent_matrix(vertex, adjacent);

    for (int i = 0; i < n; ++i) {
        cout << adjacent[i][0];
        for (int j = 1; j < n; ++j)
            cout << ' ' << adjacent[i][j];
        cout << '\n';
    }
}

void to_adjacent_matrix(vector<vector<int> >& adjacent_list, vector<vector<int> >& adjacent_matrix)
{
    int n = adjacent_list.size();

    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n && adjacent_list[i][j] != -1; ++j) {
            int adjacent = adjacent_list[i][j] - 1;
            if (adjacent < 0 || adjacent > n)
                continue;

            adjacent_matrix[i][adjacent] = 1;
        }
    }
}

C++: #include <algorithm>
#include <iostream>
#include <string>
#include <cstring>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <deque>
#include <iomanip>
#include <limits>
#include <map>
#include <queue>
#include <stack>
#include <vector>

#define FOR(i,k,n) for(int (i) = (k); (i) < (n); ++(i))
#define rep(i,n) FOR(i,0,n)
#define pb push_back
#define all(v) begin(v), end(v)
#define debug(x) cerr << #x << ": " << x << endl
#define debug2(x,y) cerr << #x << ": " << x << ", " << #y << ": " << y << endl

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<i_i, int> p_i;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
template<class T> using vv=vector<vector<T>>;
typedef deque<int> di;
typedef deque<deque<int>> ddi;


int main() {
    int n;
    bool g[101][101] = {};
    cin >> n;
    rep(i,n) {
        int u,k;
        cin  >> u >> k;
        rep(j,k) {
            int tmp;
            cin >> tmp;
            g[u][tmp] = 1;
        }
    }
    FOR(i,1,n+1) {
        FOR(j,1,n+1) {
            cout << g[i][j];
            if(j != n) cout << " "; 
        }
        cout << endl;
    }
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int t1, t2, t3, n, a[105][105];

int main() {
	cin >> n;
	for (int i = 0; i < n; i++) {
		cin >> t1 >> t2;
		for (int j = 0; j < t2; j++) {
			cin >> t3;
			a[t1][t3] = 1;
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			cout << a[i][j] << ((j < n) ? ' ' : '\n');
		}
	}
}

C++: #include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)
using ll = long long;
using P = pair<int, int>;
static const int N = 100;

int main() {
    int M[N][N]; // 0 オリジンの隣接行列
    int n, u, k, v;

    cin >> n;

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) M[i][j] = 0;
    }

    for (int i = 0; i < n; i++) {
        cin >> u >> k;
        u--; // 0 オリジンへ変換
        for (int j = 0; j < k; j++) {
            cin >> v;
            v--; // 0 オリジンへ変換
            M[u][v] = 1; // u と v の間に辺を張る
        }
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (j) cout << " ";
            cout << M[i][j];
        }
        cout << endl;
    }

    return 0;

}

C++: #include <bits/stdc++.h>
#define rep(i, n) for (ll i = 0; i < (ll)n; i++)
#define PI 3.14159265358979323846
#define vll vector<long long>
#define vvll vector<vector<long long>>
using namespace std;
using ll = long long;
using ld = long double;

// ----本問について----
// 問題：Breadth First Search
// 問題文URL：https://onlinejudge.u-aizu.ac.jp/problems/ALDS1_11_C
// 所要時間：30分
// 学んだこと：グラフの表現方法
// ------------------

// ----ここから本問のソースコード----
static const ll N_MAX = 110;

// グローバル変数（入力）
ll n,A[N_MAX][N_MAX];

// 入力
void input() {
  cin >> n;
}

void solve() {
  // 隣接リストを隣接行列に変換して二次元配列Aに格納
  rep(i,n){
    ll v,k;
    cin >> v >> k;
    rep(j,k){
      ll v2;
      cin >> v2;
      A[v][v2]=1;
    }
  }

  // 隣接行列を出力
  rep(i,n){
    rep(j,n){
      cout << A[i+1][j+1];
      if (j<n-1){
        cout << " ";
      } else {
        cout << endl;
      }
    }
  }
}

int main() { 
  input();
  solve();
  return 0; 
}

C++: #include<iostream>
#include<vector>
#include<algorithm>
#include<cctype>
#include<utility>
#include<string>
#include<cmath>
#include<cstring>
#include<queue>
#include<map>
#include<set>
#include<climits>

#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define FORR(i, m, n) for(int i = m;i >= n;i--)
#define SORT(v, n) sort(v, v+n);
#define VSORT(v) sort(v.begin(), v.end());
#define llong long long
#define pb(a) push_back(a)

using namespace std;

typedef long long int ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;


template<typename T>
vector<T> make_v(size_t a) { return vector<T>(a); }
template<typename T, typename... Ts>
auto make_v(size_t a, Ts... ts) {
	return vector<decltype(make_v<T>(ts...))>(a, make_v<T>(ts...));
}
template<typename T, typename V>
typename enable_if<is_class<T>::value == 0>::type
fill_v(T& t, const V& v) { t = v; }
template<typename T, typename V>
typename enable_if<is_class<T>::value != 0>::type
fill_v(T& t, const V& v) {
	for (auto& e : t) fill_v(e, v);
}


#define ARRAY_MAX 100005
const int INF = INT32_MAX / 3;
const ll MOD = 1e9 + 7;

int dx[4] = { 1,0,0,-1 };
int dy[4] = { 0,1,-1,0 };


/******************************************************************************************/


int main() {

	int mp[105][105] = {};

	int n;
	cin >> n;
	for (int i = 0; i < n; i++)
	{
		int v, k;
		cin >> v >> k;
		v--;
		for (int j = 0; j < k; j++)
		{
			int c;
			cin >> c;
			c--;
			mp[v][c] = 1;
		}
	}

	for (int i = 0; i < n; i++)
	{
		
		for (int j = 0; j < n; j++)
		{
			if (j == 0) {
				cout << mp[i][j];
			}
			else
			{
				cout << " " << mp[i][j];
			}
		}
		cout << endl;
	}



	return 0;
}

C++: #include <iostream>

using namespace std;

int main() {
    int n, u, k, v, a[101][101] = {};
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        cin >> u >> k;
        while (k--) {
            cin >> v;
            a[u][v] = 1;
        }
    }
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= n; ++j) {
            if (j > 1)
                cout << " ";
            cout << a[i][j];
        }
        cout << endl;
    }

    return 0;
}

C++: #include<iostream>
using namespace std;
static const int N=100;

int main()
{
  int M[N][N];
  int n,u,k,v;

  cin>>n;

  for(int i=0;i<n;i++)
    {
      for(int j=0;j<n;j++)
	{
	  M[i][j]=0;
	}
    }

  for(int i=0;i<n;i++)
    {
      cin>>u>>k;
      u--;
      for(int j =0;j<k;j++)
	cin>>v;
      v--;
      M[u][v]=1;
    }
}

for(int i=0;i<n;i++)
  {
    for(int j=0;j<n;j++)
      {
	if(j)cout<<"";
	cout<<M[i][j];
      }
    cout<<endl;
  }

return0;
}