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>

using namespace std;

int main() {

  int n;
  cin >> n;
  int A[110][110];
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      A[i][j] = 0;
    }
  }
  for (int i = 0; i < n; i++) {
    int u, k, v;
    cin >> u >> k;
    for (int j = 0; j < k; j++) {
      cin >> v;
      A[u-1][v-1] = 1;
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (j) cout << ' ';
      cout << A[i][j];
    }
    cout << endl;
  }
}

C++: #include<iostream>
#include<queue>
using namespace std;
int main()
{
  int n,u,k,v,**M;
  cin>>n;
  M=new int*[n];
  for(int i=0;i<n;i++)
    {
      M[i]=new int[n];
      for(int j=0;j<n;j++)
	M[i][j]=0;
    }
  int count=0;
  while(count<n)
    {
      count++;
      cin>>u>>k;
      for(int i=0;i<k;i++)
	{
	  cin>>v;
	  M[u-1][v-1]=1;
	}
    }
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++)
      cout<<' '<<M[i][j];
    cout<<endl;
  }
  delete M;
}

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

int main(){
    //0 0??????????????\??????
    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;
        //??¬??¢???0?????????
        u--;
        for(int j=0;j<k;j++){
            cin>>v;
            //??¬??¢???0?????????
            v--;
            //??¨u???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 <iostream>
using namespace std;
static const int N=100;

int main(){
	
	int M[N][N];//定义邻接矩阵 
	
	int n;
	int u,v,k;
	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 <iostream>
#include <string>
#include <sstream>
#include <queue>
using namespace std;
struct dot{
	long long int k,p,l,r;
};
int main(int argc, char** argv) {
	int n;
	while(cin>>n){
		int d[n][n];
		for(int i=0;i<n;i++)
			for(int j=0;j<n;j++)
				d[i][j]=0;
		for(int i=0;i<n;i++){
			int a,b;
			cin>>a>>b;
			a--;
			for(int j=0;j<b;j++){
				int c;
				cin>>c;
				d[a][c-1]=1;
			}
		}
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++){
				cout<<d[i][j];
				if(j<n-1)
					cout<<" ";
			}
			cout<<endl;
		}
			
				
	}
	return 0;
}

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


main(){
	int j,m,n,k,i,u;
	int g[101][101];
	scanf("%d",&n);
	for(i=1;i<=n;i++){
	    for(j=1;j<=n;j++)
		   g[i][j]=0;
	}
	for(i=1;i<=n;i++){
		scanf("%d%d",&k,&u);
		for(j=0;j<u;j++){
			scanf("%d",&m);
			g[k][m]=1;
		}
	}
	for(i=1;i<=n;i++){
	    for(j=1;j<=n;j++){
		printf("%d",g[i][j]);
		if(j<n)
		printf(" ");}
		printf("\n");
	}
	return 0;
}

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

int main()
{
    int n,k;
    int A[100][100]={0};
    cin>>n;
    for(int i=0;i<n;i++)
    {
        cin>>k;
        for(int j=0;j<k;j++)
        {
            int x;
            cin>>x;
            A[i][x-1]=1;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
                cout<<A[i][j];
            if(j!=n-1)
                cout<<" ";
        }
        cout<<endl;
    }
    return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <sstream> 
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define  all(x) (x).begin(),(x).end()
typedef long long ll;

int A[105][105];

int main(){
    int n;
    cin >> n; cin.ignore();
    for(int i = 1; i <= n; i++){
        string s;
        getline(cin, s);
        istringstream ss(s);
        int u, k, v;
        ss >> u >> k;
        for(int j = 0; j < k; j++){
            ss >> v;
            A[u][v] = 1;
        }
    }
    for(int i = 1; i <= n; i++){
        for (int j = 1; j <= n; j++){
            cout << A[i][j];
            if (j != n) cout << " ";
        }
        cout << endl;
    }
}

C++: #include<iostream>
#define SIZE 100

using namespace std;

int main(void) {

	int n, c, v;
	int G[SIZE][SIZE];
	int A[SIZE][SIZE];

	cin >> n;

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

	for (int i = 0; i < n; i++) {
		cin >> v;
		cin >> c;
		for (int j = 0; j < c; j++) {
			cin >> G[i][j];
			int tmp = G[i][j];
			if (tmp > 0) {
				A[i][tmp - 1] = 1;
			}
		}
	}

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

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

using namespace std;
typedef pair<int,int> p;

int main(void){
  int n,a,b,c;
  cin >> n;
  int v[n][n];
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
      v[i][j]=0;
    }
  }
  for(int i=0;i<n;i++){
    cin >> a >> b;
    for(int j=0;j<b;j++){
      cin >> c;
      v[a-1][c-1]=1;
    }
  }
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
      if(v[i][j]!=1)cout << 0;
      else cout << v[i][j];
      if(j!=n-1)cout << ' ';
    }
    cout << endl;
  }
  return 0;
}

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

int main(){
    int n;
    cin >> n;
    for(int i=0;i<n;i++){
        int u,k,p,a[100+10]={};
        cin >> u >> k;
        for(int j=0;j<k;j++){
            cin >> p;
            a[p-1]=1;
        }
        cout << a[0];
        for(int l=1;l<n;l++) cout << " " << a[l];
        cout << endl;
    }
}