Go: package main
import (
	"fmt"
	"bufio"
	"os"
	"bytes"
	"strconv"
	"strings"
)

func nextInt(scanner *bufio.Scanner) int {
	scanner.Scan()
	num , _ :=  strconv.Atoi(scanner.Text())
	return num
}


func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Split(bufio.ScanWords)

	N := nextInt(scanner)
	var A [][]int = make([][]int, N)
	for i:=0; i<N; i++ {
		A[i] = make([]int, N)
	}
	for i:=0; i<N; i++{
		idx := nextInt(scanner)
		cnt := nextInt(scanner)
		for j:=0; j<cnt; j++ {
			node := nextInt(scanner)
			A[idx-1][node-1] = 1
		}
	}
	var outBuffer bytes.Buffer
	for i:=0; i<N; i++ {
		outBuffer.WriteString(strings.TrimRight(fmt.Sprintf("%v",A[i])[1:], "]") + "\n")
	}
	fmt.Printf("%s", outBuffer.String())
}

C++: #include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int ans[n + 1][n + 1] = {};
    int u, k, v;
    for (int i = 0; i < n; ++i)
    {
        cin >> u >> k;
        for (int j = 0; j < k; ++j)
        {
            cin >> v;
            ans[u][v] = 1;
        }
    }
    for (int i = 1; i <= n; ++i)
    {
        for (int j = 1; j <= n; ++j)
        {
            printf("%d", ans[i][j]);
            if (j < n)
                putchar(' ');
        }
        putchar('\n');
    }
}

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

//??£??\?????????????¬??????????????¨???¶???	array[i][j] i??????j???????????????
//??£??\?????????????????????????????????????????????,?????????????¨???¶
//ALDS1_11-A
int n,u,k,a;
int map[101][101];
int main(){
	for(int i=0;i<101;i++){
		for(int j=0;j<101;j++){
			map[i][j]=0;
		}
	}
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>u;
		cin>>k;
		for(int j=0;j<k;j++){
			cin>>a;
			map[u][a]=1;
		}
	}
	for(int i=1;i<n+1;i++){
		for(int j=1;j<n+1;j++){
			cout<<map[i][j];
			if(j!=n) cout<<" ";
			if(j==n&&i!=n) 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 >> 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<stdlib.h>
#include<math.h>
#include<string.h>
#pragma warning(disable:4996)
int main()
{
	int u, k, n, v;
	int i, j;
	int matrix[102][102] = {0};

	scanf("%d", &n);
	for (i = 0; i < n; i++)
	{
		scanf("%d", &u);
		scanf("%d", &k);
		for (j = 0; j < k; j++)
		{
			scanf("%d", &v);
			matrix[u][v] = 1;
		}
	}
	for (i = 1; i <= n; i++)
	{
		for (j = 1; j <= n; j++)
		{
			if (j == n)
			{
				printf("%d\n", matrix[i][j]);
			}
			else
			{
				printf("%d ", matrix[i][j]);
			}
		}
	}

	return 0;

}

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

int main(){
  int n,u,k;
  int ad;
  int arr[200][200] = {0};
  scanf("%d",&n);
  for(int i=0;i<n;i++){
    cin >> u >> k;
    for(int i=0;i<k;i++){
      cin >> ad;
      arr[u][ad] = 1;
    }
  }

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

C++: #include<bits/stdc++.h>
#include<string>
#include<cctype>
#include<cmath> 
#define rep(i,n) for(int i=0;i<(n);i++)
using namespace std;
 
int main(){
  int n,i,j;
  cin >> n;
  int u[n];
  int k[n];
  int G[n][n];

  rep(i,n){
    rep(j,n){
      G[i][j]=0;
    }
  }
   
  rep(i,n){
    cin >> u[i] >> k[i];
    int v=k[i];
    int v2[v];
    rep(j,v){
      cin >> v2[j];
      G[u[i]-1][v2[j]-1]=1;
    }
  }

  
  rep(i,n){
    rep(j,n-1){
      cout << G[i][j] <<' ';
    }
    cout << G[i][n-1] << '\n';
  }

  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 >> 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<Miostream>

C++: #include<stdio.h>
typedef struct{
  int u;
  int k;
  int v[100];
}Graph;

main(){
  int i,j,n;
  int a[100][100];
  Graph node[100];
  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%d",&node[i].u);
    scanf("%d",&node[i].k);
    for(j=0;j<node[i].k;j++)scanf("%d",&node[i].v[j]);
  }

  for(i=0;i<n;i++){
    for(j=0;j<n;j++){
      a[i][j]=0;
    }
    for(j=0;j<node[i].k;j++){
      a[i][node[i].v[j]-1] = 1;
    }
  }
  for(i=0;i<n;i++){
    for(j=0;j<n;j++){
      printf("%d",a[i][j]);
    }
    if(i<n)printf("\n");
  }

  return 0;
}

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

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

C++: #include<cstdlib>
#include<cstdio>
#include<algorithm>
using namespace std;
const int MAXN = (int)1e2 + 10;

int n;
int a[MAXN][MAXN];

void work(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        int u,k; scanf("%d%d",&u,&k);
        for(int j=1;j<=k;j++){
            int v; scanf("%d",&v);
            a[u][v]=1;
        }
    }
    for(int i=1;i<=n;i++){
        printf("%d",a[i][1]);
        for(int j=2;j<=n;j++) printf(" %d",a[i][j]);
        printf("\n");
    }
}

int main(){
    work();
    return 0;
}

C++: #include<bits/stdc++.h>
#define MAX 101
using namespace std;

int G[MAX][MAX]={};

void print(int n){
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
      if(j!=n)cout<<G[i][j]<<" ";
      else cout<<G[i][j];
    }
    cout<<endl;
  }
}
  
int main(){
  int n,i,k,j,A,B;
  cin>>n;
  for(i=0;i<n;i++){
    cin>>A>>k;
    for(j=0;j<k;j++){
      cin>>B;
      G[A][B]=1;
    }
  }
  print(n);
}

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

static const int Q = 1000;

int main(){
  int M[Q][Q],n,u,k,v;

  cin >> n;

  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;
}