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>
#include <cassert>
#include <algorithm>
#include <functional>

using namespace std;
    
#include <iostream>
#include <vector>
#include <cassert>
#include <algorithm>
#include <functional>
#include <cmath>
#include <iomanip>
#include <limits>
#include <bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    vector<vector<int>> vec(n);
    vector<int> SIZE;
    for(int i=0;i<n;i++){
        int x;
        cin >> x;
        int num;
        cin >> num;
        SIZE.push_back(num);
        for(int j = 0;j< num;j++){
            int y;
            cin >> y;
            vec[x-1].push_back(y-1) ;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            bool hantei=0;
            for(int k=0;k<SIZE[i];k++){
                
                if(vec[i][k]==j) {
                    if(j!=n){
                        cout << 1 <<" "; hantei=1;
                    }else{
                        cout << 1 ;
                    }    
                }
            }
            if(hantei==0){ 
                if(j!=n){
                    cout <<0<<" ";
                }else{
                    cout << 0;
                }
                
            };
        }cout << endl;
    }
}

C++: #include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int u,k,v;
    int A[100][100]={{}};
    for(int i=0;i<n;i++){
         cin>>u>>k;
         if(k!=0){
             for(int i=0;i<k;i++){
                cin>>v;
                A[u-1][v-1]=1;
             }
         }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(j==0){
            cout<< A[i][j];
            }
            else{
                cout<<" "<<A[i][j];
            }
        }
        cout<<endl;
    }
}

C++: #include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<bitset>
#include<vector>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<iomanip>
#include <functional>
using namespace std;
typedef long long ll;
const int mod = 1000000007;
const int INF = 1 << 28;
//cout << fixed << std::setprecision(9)
//memset(a, 0, sizeof(a));
//--------------------------


int n;
int g[110][110];

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

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

	return 0;
}

C++: #define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <cstdlib>
#include <string>
#include <iostream>
#include <climits>

using namespace std;


int main() {
	int n;
	int u, v;
	int Adj[101][101];
	int deg;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			Adj[i][j] = 0;
		}
	}
	for (int i = 1; i <= n; i++) {
		cin >> u;
		cin >> deg;
		for (int j = 1; j <= deg; j++) {
			cin >> v;
			Adj[u][v] = 1;
		}
	}
	for(int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			printf("%d", Adj[i][j]);
			if (j != n) {
				printf(" ");
			}
		}
		printf("\n");
	}
}

C++: #include<stdio.h>
#include<algorithm>
#include<string.h>
using namespace std;
#define INFTY 2000000001
#define MAX 101

int n = 0;
int adl[MAX][MAX], deg[MAX];
int adm[MAX][MAX];

int main() {
  scanf("%d", &n);
  for ( int i = 0; i < n; i++ ) {
    for ( int j = 0; j < n; j++ ) {
      adm[i][j] = 0;
    }
  }
  for ( int i = 0; i < n; i++ ) {
    int num;
    scanf("%d", &num);
    num--;
    scanf("%d", &deg[num]);
    for ( int j = 0; j < deg[num]; j++) {
      scanf("%d", &adl[num][j]);
      adl[num][j]--;
      adm[num][adl[num][j]] = 1;
    }
  }

  for ( int i = 0; i < n; i++ ) {
    for ( int j = 0; j < n-1; j++ ) {
      printf("%d ", adm[i][j]);
    }
    printf("%d\n", adm[i][n-1]);
  }

  return 0;
}

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

//隣接行列
int d[101][101];

int main(){
  
  int u,k,v,n;
  cin >> n;
  //入力
  for(int i = 0; i < n; i++){
    cin >> u >> k;
    for(int j = 0; j < k; j++){
      cin >> v;
      d[u][v] = 1;//隣接しているところを1にする
    }
  }
  //出力
  for(int i = 1; i <= n; i++){
    for(int j = 1; j <= n; j++){
      //最後に空白が入らないようにする
      if(j == n){
	cout << d[i][j];
      }else{
	cout << d[i][j] << " ";
      }
    }
    cout << endl;
  }
  return 0;
}

C++: int main(){ //??°???????????£??\??????????????£??\?????????????????????????????°??????
    
    int n,k,v,w;
    
    cin >> n; //??°????????????????????\???
    
    Matrix M(n,Array(n,0)); //??£??\??????????????????
    
    for (int i=0; i<n; i++) { //??????????¬???°?????????????????\??? ???????????\??????????????£??\??????????????£??\?????????????´?
        cin >> w >> k;
        for (int j=0; j<k; j++) {
            cin >> v;
            M[w-1][v-1] = 1; //?????????
        }
    }
    
    for (int i=0; i<n; i++) { //????????¢?????§??????
        for (int j=0; j<n; j++) {
            cout << M[i][j];
            if (j!=n-1) {
                cout << " ";
            }
        }
        cout << endl;
    }
    
    return 0;
}

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

int G[101][101];

int main(){
  int n, u, k, v;
  cin >> n;
  for(int i = 0; i < n; i++){
    cin >> u >> k;
    for(int j = 0; j < k; j++){
      cin >> v;
      G[u][v] = 1;
    }
  }
  for(int i = 1; i <= n; i++)
    for(int j = 1; j <= n; j++)
      cout << G[i][j] << (j == n ? '\n' : ' ');
  return 0;
}