Go: package main

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

func main() {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	n, err := nextInt(sc)
	if err != nil {
		panic(err)
	}
	matrix := make([][]int, n)
	for i := 0; i < n; i++ {
		matrix[i] = make([]int, n)
		id, err := nextInt(sc)
		if err != nil {
			panic(err)
		}
		vNum, err := nextInt(sc)
		if err != nil {
			panic(err)
		}
		for j := 0; j < vNum; j++ {
			v, err := nextInt(sc)
			if err != nil {
				panic(err)
			}
			matrix[id-1][v-1] = 1
		}
	}
	for i := 0; i < n; i++ {
		printRow(matrix[i])
	}
}

func printRow(row []int) {
	xs := make([]string, len(row))
	for i := 0; i < len(row); i++ {
		xs[i] = strconv.Itoa(row[i])
	}
	fmt.Println(strings.Join(xs, " "))
}

func nextInt(sc *bufio.Scanner) (int, error) {
	sc.Scan()
	return strconv.Atoi(sc.Text())
}

C++: #include <cassert>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <algorithm>
#include <bitset>
#include <complex>

#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#define rep(i,n) for(int i=0;i<(n); i++)
#define rep2(i,n) for(int i=1;i<=(n);i++)

using namespace std;
typedef long long ll;
const int NMAX = 100;
const int k = 200000;
static const int INF = 1<<29;
string s,t,ans;
int dp[3001][3001];
ll gcd(ll a, ll b){
    if(a<b) swap(a,b);
    if(b==0) return a;
    return gcd(b, a%b);
}
int M[NMAX+1][NMAX+1]={0};
int main(){
    cin.tie(0);
    ios::sync_with_stdio(0); //この2行はより速度を向上させる
    // 追加２, 以降 cin の入力元が 'input.txt' になる

    int n;
    cin >> n;
    rep2(i,n){
        int u,k;
        cin >> u >> k;
        int v[k+1];
        rep2(j,k) cin >> v[j];
        rep2(j,k){
            M[i][v[j]]=1;
        }
    }
    rep2(i,n){
        rep2(j,n-1){
            cout << M[i][j] << " ";
        }
        cout << M[i][n] << endl;
    }
    return 0;
}

C++: #include<iostream>
int main(){
    int n;
    std::cin>>n;
    int A[n][n];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            A[i][j]=0;
        }
    }
    int tmp,s,e;
    for(int i=0;i<n;i++){
        std::cin>>s;
        std::cin>>tmp;
        for(int j=0;j<tmp;j++){
            std::cin>>e;
            A[s-1][e-1]=1;
        }
    }

    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            std::cout<<A[i][j]<<" ";
        }
        if(i!=n-1){
            std::cout<<"\n";
        }
    }
    return 0;
}

C++: #include <iostream>
#include <vector>
#include <cassert>
#include <algorithm>
#include <functional>

using namespace std;
    
#include <iostream>
#include <vector>
#include <cassert>
#include <algorithm>
#include <functional>
#include <cmath>
#include <iomanip>
#include <limits>
#include <bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    vector<vector<int>> vec(n);
    vector<int> SIZE;
    for(int i=0;i<n;i++){
        int x;
        cin >> x;
        int num;
        cin >> num;
        SIZE.push_back(num);
        for(int j = 0;j< num;j++){
            int y;
            cin >> y;
            vec[x-1].push_back(y-1) ;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            bool hantei=0;
            for(int k=0;k<SIZE[i];k++){
                
                if(vec[i][k]==j) {
                    if(j!=n){
                        cout << 1 <<" "; hantei=1;
                    }else{
                        cout << 1 ;
                    }    
                }
            }
            if(hantei==0){ 
                if(i!=n){
                    cout <<0<<" ";
                }else{
                    cout << 0;
                }
                
            };
        }cout << endl;
    }
}

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

using namespace std; 

int main(void) {
	int nov,noe,u,v;
	cin >> nov;
	vector< vector<int> > adj(nov,vector<int>(nov,0));
	for (int i = 0; i < nov; ++i) {
		cin >> u;
		cin >> noe;
		for (int j = 0; j < noe; ++j) {
			cin >> v;
			adj[u-1][v-1] = 1;
		}
	}
	for (int i = 0; i < nov; ++i) {
		for (int j = 0; j < nov; ++j) {
			cout << adj[i][j];
			if (j < nov-1) {
				cout << " ";
			}
		}
		cout << endl;
	}
	return 0;
}

C++: #include <iostream>
#define MAX 101

using namespace std;

int main(){
  int n, i, j, k, l, m;
  bool g[MAX][MAX];
  
  for(i=1;i<MAX;++i){
    for(j=1;j<MAX;++j)
      g[i][j] = false;
  }
  
  cin >> n;
  for(i=1;i<=n;++i){
    cin >> k >> l;
    for(j=1;j<=l;++j){
      cin >> m;
      g[k][m] = true;
    }
  }
  
  for(i=1;i<=n;++i){
    for(j=1;j<=n;++j){
      cout << g[i][j];
      if(n != j)cout << " ";
    }
    cout << "\n";
  }
  
  return 0;
}

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

int main(void){
    int n;
    int ind, num, a;
    std::cin >> n;
    std::vector<std::vector<int>> b(n, std::vector<int>(n));
    for(int i = 0; i < n; i++){
        std::cin >> ind >> num;
        ind--;
        for(int i = 0; i < num; i++){
            std::cin >> a;
            a--;
            b[ind][a] = 1;
        }
        
    }
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            if(j != 0){
                std::cout << " " << b[i][j];
            }else{
                std::cout << b[i][j];
            }
        }
        std::cout << std::endl;
    }
    return 0;
}

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

int main(int argc, char const *argv[]) {
  int n;  cin >> n;
  vector<vector<int> > a(n, vector<int>(n));
  for (int i = 0; i < n; ++i) {
    int u, k;
    cin >> u >> k;
    for (int j = 0; j < k; ++j) {
      int v;  cin >> v;
      a[u - 1][v - 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 << '\n';
  }
  return 0;
}