Go: package main

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

func main() {
	var n int
	fmt.Scanf("%d", &n)

	adj := make([][]string, n)
	for i := 0; i < n; i++ {
		adj[i] = make([]string, n)
		for j := 0; j < n; j++ {
			adj[i][j] = "0"
		}
	}

	sc := bufio.NewScanner(os.Stdin)
	for i := 0; i < n; i++ {
		sc.Scan()
		adjList := strings.Split(sc.Text(), " ")
		outDegree, _ := strconv.Atoi(adjList[1])

		if outDegree > 0 {
			for k := 0; k < outDegree; k++ {
				j, _ := strconv.Atoi(adjList[k+2])
				adj[i][j-1] = "1"
			}
		}
	}

	for i := 0; i < len(adj); i++ {
		fmt.Println(strings.Join(adj[i], " "))
	}

}

C++: #include<iostream>
using namespace std;
typedef struct{
  int A[1000];
}node;
node T[105];
int main(){
  int n;
  int num;
  int son;
  int z;
  cin>>n;
  for(int i=0;i<n;i++){
    cin>>num;
    cin>>son;
    for(int j=0;j<son;j++){
      cin>>z;
      T[num].A[z]=1;
      }
  }
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
      if(j==1)cout<<T[i].A[j];
      else cout<<" "<<T[i].A[j];
    }
    cout<<endl;
  }
  return 0;
}

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

int main(void){
  int m, a[100][100];
  int b[100][100];

  cin >> m;
  cout << m << "\n";

  for(int i=0; i<m; i++){
    cin >> a[i][0];
    cin >> a[i][1];

    for(int j=2; j<a[i][1]+2; j++){
      cin >> a[i][j];
      b[i][ a[i][j]-1 ] = 1;
    }
  }

  for(int i=0; i<m; i++){
    for(int j=0; j<m; j++){
      cout << b[i][j] << " ";
    }
    cout << "\n";
  }
  return 0;
}

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

int n;
int M[101][101];
int main() {
    cin >> n;

    for (int i = 0; i < n; ++i) {
        int v, k;
        cin >> v >> k;
        for (int j = 0; j < k; ++j) {
            int s;
            cin >> s;
            M[v][s] = 1;
        }
    }

    for (int l = 1; l <= n; ++l) {
        for (int i = 1; i <= n; ++i) {
            cout << M[l][i] << " " ;
        }
        if(l != n)
        cout << endl;
    }

    return 0;
}