Go: package main

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

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 500001), 500000)
	return scanner
}

func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}

func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}

func main() {
	fp := os.Stdin
	if len(os.Args) > 1 {
		fp, _ = os.Open(os.Args[1])
	}

	scanner := getScanner(fp)
	writer := bufio.NewWriter(os.Stdout)

	n := getNextInt(scanner)
	g := make([][]int, n)

	for i := 0; i < n; i++ {
		g[i] = make([]int, n)
	}

	for i := 0; i < n; i++ {
		u := getNextInt(scanner)
		k := getNextInt(scanner)
		u--
		for ii := 0; ii < k; ii++ {
			v := getNextInt(scanner)
			v--
			g[u][v] = 1
		}
		fmt.Fprintln(writer, joinint(g[u], " "))
	}

	writer.Flush()
}

func joinint(a []int, sep string) string {
	n := len(a)
	ss := make([]string, n)
	for i := 0; i < n; i++ {
		ss[i] = fmt.Sprintf("%d", a[i])
	}
	return strings.Join(ss, sep)
}

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

int main ()
{
    int N;
    cin >> N;

    int M[N][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++)
    {
        int u, k;
        cin >> u >> k;
        u--;

        for (int j = 0; j < k; j++)
        {
            int v;
            cin >> v;
            v--;
            M[u][v] = 1;
        }
    }

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

    return 0;
}

C++: You are not allowed to see this code.

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

int main(void)  {
  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 <bits/stdc++.h>
#define PI 3.14159265359
#define NIL (-1)
using namespace std;
const int64_t MOD = 1e9 + 7;

int main() {
	int n;
	cin >> n;

	vector<vector<bool>> M(n, vector<bool>(n));
	for (int i = 0; i < n; i++) {
		int v, k;
		cin >> v >> k;

		for (int j = 0; j < k; j++) {
			int x;
			cin >> x;
			M.at(v - 1).at(x - 1) = true;
		}
	}

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (j) cout << ' ';
			cout << M.at(i).at(j);
		}
		cout << endl;
	}
}

C++: #include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
#include <bitset>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
typedef long long ll;

int main(){
  int n; cin >> n;
  int G[n][n];
  FOR(i,0,n) FOR(j,0,n) G[i][j] = 0;
  FOR(i,0,n){
    int u,k;
    cin >> u >> k;
    u--;
    FOR(j,0,k){
      int v;
      cin >> v;
      v--;
      G[u][v] = 1;
    }
  }
  FOR(i,0,n){
    FOR(j,0,n){
      printf("%d%c", G[i][j], j == n - 1 ? '\n' : ' ');
    }
  }
  return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast")

#define rep(i,n) for(int i=0;i<n;i++)
const long long MOD = 1000000007;

int main(){
  int n; cin >> n;
  int graph[n][n] = {};
  int k,f;
  rep(i,n){
    cin >> f >> k;
    rep(j,k){
      int ai; cin >> ai;
      graph[i][ai-1] = 1;
    }
  }
  rep(i,n){
    rep(j,n){
      cout << graph[i][j];
      if(j != n-1) cout << " ";
    }
    cout << "\n";
  }
}

C++: #include <iostream>
using namespace std;
int G[101][101];
int n,v,k,p;
int main(){
	cin >>n;
	for(int i=0;i<n;i++){
		cin >> v>>k;
		for(int j=0;j<k;j++){
			cin >> p;
			G[v][p]=1;
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<n;j++){
			cout << G[i][j]<<" ";
		}
		cout << G[i][n]<<endl;
	}
}

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<iostream>

using namespace std;
 
void main() {
	int Adj[100][100];
	int n, u, k, v;
	cin >> n;

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			Adj[i][j] = 0;
		}
	}
	for (int i = 0; i < n; i++) {
		cin >> u >> k;
		u--;
		for (int j = 0; j < k; j++) {
			cin >> v;
			v--;
			Adj[u][v] = 1;
		}
	}
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (j != 0) cout << " ";
			cout << Adj[i][j];
		}
		cout << endl;
	}
}

C++: #include <iostream>

using namespace std;

int main(){
  int n,k, u, v;

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

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

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

 return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <set>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <functional>
#include <map>
#include <cmath>
#include <queue>

using namespace std;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n;scanf("%d",&n);
    int u;
    int k;
    vector<vector<int> > graph;
    graph.resize(n);
    for(int i=0;i<n;i++){
        graph[i].resize(n);
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            graph[i][j]=0;
        }
    }

    for(int i=0;i<n;i++){
        scanf("%d",&u);
        scanf("%d",&k);
        int value;
        for(int j=0;j<k;j++){
            scanf("%d",&value);
            graph[u-1][value-1]=1;
        }
    }

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

    return 0;
}

C++: #include <iostream>

using namespace std;
int main(){
    int n;
    cin >> n;
    int mat[n][n] = {};
    for(int i = 0; i < n; ++i){
        int id;
        cin >> id;
        int k;
        cin >> k;
        int v;
        for(int j = 0; j < k; ++j){
            cin >> v;
            mat[id-1][v-1] = 1;
        }
    }
    for(auto x : mat){
        for(int i = 0; i < n; ++i){
            if(i == 0){
                cout << x[i];
            } else {
                cout << ' ' << x[i];
            }
        }
        cout << endl;
    }
}