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 <cstdio>

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

int main(){
	int n,m,l,i,j,p;
	cin >> n;
	int f[101][101];
	for ( i = 0; i < n; i++){
		cin >> m;
		cin >> p;
		for ( j = 0; j < p; j++){
			cin >> l;
			f[m-1][l-1] = 1;
		}
	}
	for ( i = 0; i < n; i++){
		for ( j = 0; j < n-1; j++){
			cout << f[i][j] << " ";
		}
		cout << f[i][n-1] << endl;
	}
}

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

int main() {
    int M[N][N]; // adjecent matrix
    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>
#include <vector>
using namespace std;

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

    int nb_nodes; cin >> nb_nodes;
    vector<vector<int>> graph( nb_nodes, vector<int>(nb_nodes, 0));
    
    int node;
    while (cin>>node){
        int nb_edges; cin >>nb_edges;
        int edge;
        for (int i=0; i<nb_edges; ++i){
            cin >> edge;    
            graph[node-1][edge-1] = 1;
        }
    }
    
    for(auto& a:graph){
        for(auto&& b:a) cout<<b<<(&b!=&a.back()? " ":"\n");
    }
}

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

int x[15000][15000],n,q,r,b;

int main() {
	cin >> n;
	for (int i = 1; i <= n; i++) {
		cin >> q >> r;
		for (int j = 0; j < r; j++) {
			cin >> b;
			x[i][b] = true;
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 0; j < n; j++) {
			if (j) { cout << ' '; }
			cout << x[i][j+1];
		}
		cout << endl;
	}
	return 0;
}

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

using namespace std;

#define Vi vector<int>
#define FOR(i,s,e) for (int i=s; i<e; i++)
#define ITER(v) v.begin(), v.end()

constexpr int N_MAX = 100;
int adj_matrix[N_MAX][N_MAX];

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

    int n;
    cin >> n;

    int id, k, v;
    FOR(i,0,n) {
        cin >> id;
        cin >> k;
        FOR(j,0,k) {
            cin >> v;
            adj_matrix[id-1][v-1] = 1;
        }
    }
    FOR(i,0,n) {
        FOR(j,0,n) {
            if (j > 0) { cout << " "; }
            cout << adj_matrix[i][j];
        }
        cout << endl;
    }

    return 0;
}

C++: #include <iostream>
#include <vector>

using namespace std;

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

    vector<vector<int>> g(n, vector<int>(n, 0));
    for (int i = 0; i < n; ++i) {
        int u, k;
        cin >> u >> k;
        --u;  // want to store graph as 0-origin

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

    for (int i = 0; i < n; ++i) {
        cout << g[i][0];
        for (int j = 1; j < n; ++j)
            cout << ' ' << g[i][j];
        cout << '\n';
    }
}

C++: #include<iostream>

#define MAX 105

int main(){
  int n,u,k;
  int adj[MAX][MAX] = {{0}};
  int A[MAX][MAX] = {{0}};
  std::cin >> n;
  for(int i=1;i<=n;i++){
    std::cin >> u >> k;
    for(int j=1;j<=k;j++){
      std::cin >> adj[u][j];
    }
    adj[u][k+1] = -1;
  }
  //std::cout << "入力\n";

  for(int i=1;i<=n;i++){
    int j=1;
    while(adj[i][j] != -1){
      A[i][adj[i][j]] = 1;
      j++;
    }
    std::cout << A[i][0] ;
    for(j=2;j<=n;j++){
      std::cout << ' ' << A[i][j] ;
    }
    std::cout << '\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 < k; 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>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <map>
#include <cmath>
#include <numeric>
#include <set>
#include <queue>
#include <cstdio>
using namespace std;
#define rep(i, n) for(int i=0;i<n;i++)
#define irep(i, n) for(int i=n-1;i>=0;i--)
#define lrep(i, n) for(long long i=0;i<n;i++)
typedef long long ll;
typedef vector<long long> llv;
typedef vector<vector<long long> > llvv;

int N = 100;

int main(){
    int m[N+1][N+1];
    int n;
    cin >> n;
    for (int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            m[i][j] = 0;
        }
    }
    for (int i=1;i<=n;i++){
        int p,r; cin >> r >> p;
        for (int j=1;j<=p;j++){
            int q;
            cin >> q;
            m[r][q] = 1;
        }
    }

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