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

static const int N=100;

int main(){
   int n;cin>>n;
   int g[n+1][n+1];

   for(int i = 1; i < n+1; i ++) {
      for(int j = 1; j < n+1; j ++) {
         g[i][j] = 0;
      }
   }

   for(int i = 1; i < n+1; i ++) {
      int i_node; cin >> i_node;
      int deg; cin >> deg;
      rep(j, deg) {
        int j_node; cin >> j_node;
        g[i_node][j_node] = 1;
      }
   }

   for(int i = 1; i < n+1; i ++) {
      for(int j = 1; j < n+1; j ++) {
         cout << g[i][j];
         if(j != n) cout << " ";
         else cout << endl;
      }
   }
   return 0;
}

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

int main(){
   int M[100][100];
   int n;
   cin >> n;

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

   int u, k, v;
   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 <stdio.h>
#include <iostream>
using namespace std;

class Adjl{
private:
	int u;
	int k;
	int *v;
public:
	Adjl(int u, int k);
	~Adjl(){ delete[] v; }
	void setV(int vk);
	void printAdjm(int n);
};

Adjl::Adjl(int u, int k)
{
	this->u = u;
	this->k = 0;
	v = new int[k];
}

void Adjl::setV(int vk)
{
	v[k] = vk;
	k++;
}

void Adjl::printAdjm(int n)
{
	int j = 0;
	for (int i = 1; i <= n; i++) {
		if (j < k && v[j] == i) {
			cout << "1";
			j++;
		}
		else {
			cout << "0";
		}
		if (i < n) cout << " ";
		else cout << endl;
	}
}

int main(void)
{
	int n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		int u, k;
		cin >> u >> k;
		Adjl *adjl = new Adjl(u, k);
		for (int j = 0; j < k; j++) {
			int vk;
			cin >> vk;
			adjl->setV(vk);
		}
		adjl->printAdjm(n);
		delete adjl;
	}

	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vs = vector<string>;
using msi = map<string, int>;
using mii = map<int, int>;
using psi = pair<string, int>;
using pii = pair<int, int>;
using vlai = valarray<int>;
#define rep(i,n) for(int i=0;i<n;i++)
#define range(i,s,n) for(int i=s;i<n;i++)
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define fs first
#define sc second
#define pb push_back
#define eb emplace_back
#define mp make_pair
#define INF 1E9
#define EPS 1E-9
#define MOD (1E9+7)
#define PI 3.1415926535897932384626433832795

std::ostream &operator<<(std::ostream &out, const vector<int> &tgt)
{
	string s;
	for (int i = 0; i<tgt.size(); i++) {
		s += (to_string(tgt[i]) + ((i != tgt.size() - 1) ? " " : ""));
	}
	out << s;
	return out;
}

int main(){
	int n,in,inn;
	cin >> n;
	vector < vector <bool>> g(n, vector<bool>(n,false));
	rep(i, n) {
		cin >> in;
		cin >> in;
		rep(j, in) {
			cin >> inn;
			g[i][inn - 1] = true;
		}
	}
	rep(i, n) {
		rep(j, n) {
			cout << (g[i][j] ? 1 : 0) << (j != n - 1 ? " " : "") ;
		}
		cout << endl;
	}
}

C++: #include <iostream>
#include <vector>
using namespace std;
#define MAXN 101

bool find(vector<int> v, int j){
    bool e = false;
    for(vector<int>::iterator it = v.begin(); it!=v.end(); ++it){
        if (*it == j) e = true;
    }
    return e;
}

int main(){
    vector<int> adj[MAXN];
    int n; cin >> n;
    for(int i=1; i<=n; ++i){
        int l, m; cin >> l >> m;
        for(int j=0; j<m; ++j){
            int k; cin >> k;
            adj[l].push_back(k);
        }
    }
    
    for(int i=1; i<=n; ++i){
        for(int j=1; j<=n; ++j){
            cout << (find(adj[i], j) ? 1 : 0 ) << " ";
        }
        cout << endl;
    }
}

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

int main() {
    int N;
    int G[101][101];
    cin >> N;
    for (int j = 0; j <= N; ++j) for (int k = 0; k <= N; ++k) G[j][k] = 0;
    for (int _ = 0; _ < N; ++_) {
        int u, k;
        cin >> u >> k;
        for (int j = 0; j < k; ++j) {
            int v; cin >> v;
            G[u][v] = 1;
        }
    }

    for (int j = 1; j <= N; ++j) {
        for (int k = 1; k <= N; ++k) {
            if (k > 1) cout << " ";
            cout << G[j][k];
        }
        cout << endl;
    }

    return 0;
}

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


int main()
{
	cin >> n ; //n頂点
	vector<int> edges[100];
	
	for (int i = 0; i < n;i++)//iは頂点
	{
		cin >> u >> k;		
		for(int j=0;j< k;j++)
		{
			int l;
			cin >> l;
			edges[u-1].push_back(l);
		}//入力終わり	
		for (int m = 0; m < n; m++)//n*n行列を作るぞい　
		{
			vector<int>::iterator result = find(edges[i].begin(), edges[i].end(), m+1);
			if (result != edges[i].end()) cout << 1;
			else cout << 0;
			if (m <= n - 2) cout << " ";
			if (m == n - 1)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;
    u--;
    cin>>k;
    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;
}