Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

// I/O
type Scanner struct {
	sc *bufio.Scanner
}

func NewScanner() *Scanner {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	sc.Buffer(make([]byte, 1024), int(1e+9))
	return &Scanner{sc}
}

func (s *Scanner) nextStr() string {
	s.sc.Scan()
	return s.sc.Text()
}

func (s *Scanner) nextInt() int {
	i, e := strconv.Atoi(s.nextStr())
	if e != nil {
		panic(e)
	}
	return i
}

func (s *Scanner) nextFloat() float64 {
	f, e := strconv.ParseFloat(s.nextStr(), 64)
	if e != nil {
		panic(e)
	}
	return f
}

func (s *Scanner) nextRuneSlice() []rune {
	return []rune(s.nextStr())
}

func (s *Scanner) nextIntSlice(n int) []int {
	res := make([]int, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextInt()
	}
	return res
}

func (s *Scanner) nextFloatSlice(n int) []float64 {
	res := make([]float64, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextFloat()
	}
	return res
}

// Arithmetic
func max(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m < i {
			m = i
		}
	}
	return m
}

func min(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m > i {
			m = i
		}
	}
	return m
}

func abs(x int) int {
	if x > 0 {
		return x
	}
	return -x
}

func pow(x, y int) int {
	res := 1
	for i := 0; i < y; i++ {
		res *= x
	}
	return res
}

func ceil(a, b int) int {
	if a%b == 0 {
		return a / b
	} else {
		return a/b + 1
	}
}

// Sort
type RuneSlice []rune

func (a RuneSlice) Len() int           { return len(a) }
func (a RuneSlice) Less(i, j int) bool { return a[i] < a[j] }
func (a RuneSlice) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }

// Main
func main() {
	sc := NewScanner()
	wtr := bufio.NewWriter(os.Stdout)
	N := sc.nextInt()
	g := make([][]int, N)
	for i, _ := range g {
		g[i] = make([]int, N)
	}
	for i := 0; i < N; i++ {
		u, k := sc.nextInt(), sc.nextInt()
		for j := 0; j < k; j++ {
			g[u-1][sc.nextInt()-1] = 1
		}
	}

	for _, r := range g {
		for i, num := range r {
			if i > 0 {
				fmt.Fprint(wtr, " ")
			}
			fmt.Fprint(wtr, num)
		}
		fmt.Fprintln(wtr)
	}
	wtr.Flush()
}

C++: #include<iostream>
#include<climits>
#include<vector>
#include<list>
#include<functional>
#include<algorithm>
#include<string>
#include<cmath>
#include<complex>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<deque>
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) for(int i=0;i<(n);i++)
#define INF (int)1e9
#define INFL (ll)1e11
using namespace std;
typedef long long ll;
typedef pair<int, int> P;



int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	int n;
	cin >> n;
	vector<vector<int>> a(n, vector<int>(n, 0));
	REP(i, n) {
		int u, k;
		cin >> u >> k;
		u--;
		REP(j, k) {
			int v;
			cin >> v;
			a[u][--v] = 1;
		}
	}
	REP(i, n) {
		REP(j, n) {
			cout << a[i][j];
			if (j < n - 1) cout << " ";
			else cout << "\n";
		}
	}
	
	return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
  int n,u[100],k[100]={},v[100][100];
  cin >> n;
  for(int i=0; i<n; i++){
    cin >> u[i];
    int x;
    cin >> x;
    k[u[i]-1]+=x;

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

  for(int i=0; i<n; i++){
    int count=0;
    for(int j=0; j<n; j++){
      if(v[i][count]==j+1){
        cout << 1;
        count++;
      }

      else
        cout << 0;

      if(j!=n)
        cout << " ";
      }

      cout << endl;
    }
  }

C++: #include <iostream>
#include <vector>
using namespace std;
 
int main() {
    int n;
    cin >> n;
    vector< vector<int> > G(n, vector<int>(n));
    for (int i = 0; i < n; i++) {
        int u, k;
        cin >> u >> k;
        u--;
        for (int j = 0; j < k; j++) {
            int v;
            cin >> v;
            v--;
            G[u][v] = 1;
        }
    }
 
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (j > 0) cout << " ";
            cout << G[i][j];
        }
        cout << endl;
    }
    return 0;
}

C++: #include <bits/stdc++.h>
#include <iostream>
#include <math.h>
using namespace std;
int main() {
    int N;
    cin >> N;
    vector<vector<int>> vec(N, vector<int>(N, 0));
    for (int i=0; i<N; i++) {
        int index, count;
        cin >> index >> count;
        for (int j=0; j<count; j++) {
            int inx;
            cin >> inx;
            vec[index-1][inx-1] = 1;
        }
    }

    for (int i=0; i<N; i++) {
        for (int j=0; j<N; j++) {
            cout << vec[i][j];
            if (j < N-1) {
                cout << " ";
            }
        }
        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++){
		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;
	}
	
	return 0;
}

C++: #include <iostream>
using namespace std;
static int const 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;
	}
}

C++: #include<cstdio>
#include<functional>
#include<algorithm>
using namespace std;
int n,k[101],v[101][100];
int a[101][101];
int main(void)
{
	int i,u,j;
	scanf("%d",&n);
	for(i=1;i<=n;i++)	{
		for(j=1;j<=n;j++)	{
			a[i][j]=0;
		}
	}
	for(i=1;i<=n;i++)	{
		scanf("%d %d",&u,&k[i]);
		for(j=0;j<k[i];j++)	{
			scanf("%d",&v[i][j]);
			a[u][v[u][j]]=1;
		}
	}
	for(i=1;i<=n;i++)	{
		printf("%d",a[i][1]);
		for(j=2;j<=n;j++)	{
			printf(" %d",a[i][j]);
		}
		printf("\n");
	}
	return 0;
}

C++: #include<bits/stdc++.h>

using namespace std;
#define fordebug int hoge;cin>>hoge;
#define DEKAI 1000000007
#define INF (1<<28)
#define lp(i,n) for(int i=0;i<n;i++)
#define lps(i,j,n) for(int i=j;i<n;i++)
#define floot10 cout<<fixed<<setprecision(10);
#define int long long
int a[600000];

signed main(){
	int ans[100][100]={};
	int n,d,k,v;
	cin>>n;
	lp(i,n){
		cin>>d>>k;
		lp(j,k){
			cin>>v;
			ans[d-1][v-1]=1;
		}
	}
	lp(i,n){
		lp(j,n){
			if(j!=0)cout<<" ";
			cout<<ans[i][j];
		}
		cout<<endl;
	}
	return 0;
}

C++: #include <iostream>
using namespace std;

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 != 0) {
                cout << " ";
            }
            cout << M[i][j];
        }
        cout << endl;
    }

    return 0;
}

C++: #include<bits/stdc++.h>
#include<limits.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; i++)

#define MAX 200

int main(){
    int n; cin >> n;
    vector<vector<int>> adj_mat(MAX, vector<int>(MAX, 0));

    rep(i, n){
        int u, k; cin >> u >> k;

        rep(j, k){
            int v; cin >> v;
            adj_mat.at(u-1).at(v-1) = 1;
        }

    }

    rep(i, n){
        rep(j, n-1){
            cout << adj_mat.at(i).at(j) << " ";
        }
        cout << adj_mat.at(i).at(n-1) << endl;
    }
}