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 <vector>


int main(int argc, char const *argv[]) {
  int n; // .. 100
  std::cin >> n;


  std::vector<std::vector<bool> > adj(n, std::vector<bool>(n));

  for(int q=0; q<n; ++q){
    int i_plus_1, k;
    std::cin >> i_plus_1;
    std::cin >> k;
    for(int p=0; p<k; ++p){
      int j_plus_1;
      std::cin >> j_plus_1;
      adj[i_plus_1-1][j_plus_1-1] = true;
    }
  }

  for(int i=0; i<n; ++i){
      for(int j=0; j<n; ++j){
        std::cout  <<  adj[i][j] << ' '; 
      }
      std::cout << std::endl;
  }

  return 0;
}

C++: #include "bits/stdc++.h"
#pragma GCC optimize("Ofast")

// Begin {{{
using namespace std;

#ifndef DEBUG
#define dump(...)
#endif

template <class A, class B> inline bool chmax(A &a, const B &b) { return b > a && (a = b, true); }
template <class A, class B> inline bool chmin(A &a, const B &b) { return b < a && (a = b, true); }

template <class T>
inline vector<T> make_v(const T &initvalue, size_t sz) {
    return vector<T>(sz, initvalue);
}

template <class T, class... Args>
inline auto make_v(const T &initvalue, size_t sz, Args... args) {
    return vector<decltype(make_v<T>(initvalue, args...))>(sz, make_v<T>(initvalue, args...));
}

constexpr int INF = 0x3f3f3f3f;
constexpr int64_t LINF = 0x3f3f3f3f3f3f3f3fLL;
// }}} End

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    size_t n; cin >> n;

    auto matrix = make_v(0, n, n);
    for (size_t i = 0; i < n; ++i) {
        size_t u, k; cin >> u >> k;
        u--;
        for (size_t j = 0; j < k; ++j) {
            size_t v; cin >> v;
            v--;
            matrix[u][v] = 1;
        }
    }

    for (size_t i = 0; i < n; ++i) {
        for (size_t j = 0; j < n; ++j) {
            cout << matrix[i][j] << (j == n - 1)[" \n"];
        }
    }

    return 0;
}

C++: #include <iostream>
using namespace std;
int main(){
	int N;
	cin>>N;
	int u,k;
	int v[k];
	int G[N][N];
	for(int i=0;i<N;++i)
		for(int j=0;j<N;++j)
			G[i][j]=0; //?????????
	for(int i=0;i<N;++i){
		cin>>u>>k;
		for(int j=0;j<k;++j){
			cin>>v[j];
			G[u-1][v[j]]=1;  //??£??\????????????ID??§??????"u"???1???????§????????????§?????????????????????u-1??¨??????
		}	
	}
        for(int i=0;i<N;++i){
       for(int j=0;j<N;++j){
cout <<G[j][i]<< " ";
}cout<<endl;
}
}

C++: #include<iostream>
using namespace std;
bool g[114][514];
int main() {
	int n; cin >> n;
	for (int i = 0; i < n; i++) {
		int u, k; cin >> u >> k;
		for (int j = 0; j < k; j++) {
			int v; cin >> v;
			g[u][v] = true;
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			if (j != 1)cout << ' ';
			cout << g[i][j];
		}
		cout << endl;
	}
}

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


int main(){
    int n;
    cin>>n;
    
    vector<vector<int>> a(n,vector<int> (n,0));
    
    vector<vector<int>> v(n,vector<int> (n));
    for(int i=0;i<n;i++){
        int u,k;
        cin>>u>>k;
        for(int j=0;j<k;j++){
            int m;
            cin>>m;
            a.at(u-1).at(m-1)=1;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n-1;j++){
            cout<<a.at(i).at(j)<<" ";
        }
        cout<<a.at(i).at(n-1)<<endl;
    }
}

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

int main() {
  int n; cin >> n;
  vector<vector<int>> M(n, vector<int>(n));
  rep(i, n) {
    int u, k; cin >> u >> k;
    rep(z, k) {
      int num; cin >> num;
      M.at(i).at(num - 1) = 1;
    }
  }
  rep(i, n){
    rep(j, n-1)cout << M.at(i).at(j) << " ";
    cout << M.at(i).at(n-1) << endl;
  }
}

C++: #include<iostream>
#include<vector>
using namespace std;
int main()
{
    vector<int> l[101];
    int matrix[100][100];
    int n;
    cin>>n;
    for(int i=0;i<n;i++)
    {
        int u,k;
        cin>>u>>k;
        for(int j=0;j<k;j++)
        {
            int tmp;
            cin>>tmp;
            l[u].push_back(tmp);
        }
    }
    
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            matrix[i][j]=0;
        }
    }
    
    for(int i=1;i<n+1;i++)
    {
        for(int j=0;j<l[i].size();j++)
        {
            matrix[i-1][l[i][j]-1]=1;
        }
    }
    
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            if(j!=0)
                cout<<" ";
            cout<<matrix[i][j];
        }
        cout<<endl;
    }
}

C++: #include<iostream>
using namespace std;
int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N;
    cin>>N;
    int G[N][N]={};
    for(int i=0;i<N;++i){
        int u,k;
        cin>>u>>k;
        for(int j=0;j<k;++j){
            int v;
            cin>>v;
            G[u-1][v-1]=1;
        }
    }
    for(int i=0;i<N;++i){
        for(int j=0;j<N;++j){
            if(j) cout<<' ';
            cout<<G[i][j];
        }
        cout<<endl;
    }
}

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

	for (int i=0;i<n;i++) {
		for (int j=0;j<n;j++) {
			cout << adj[i][j];
			cout << ' ';
	//		if (j<n) cout << ' ';
		}
	//	cout << endl;
	}
		
	return 0;
}