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++: /*
 * Problem Description: Graph I - Graph
 * Category: Graph
 * Author: Khan
 * Date: 18th October, 2017
 */

#include <iostream>
#include <cstring>
#include <algorithm>

#define MAXN 100

using namespace std;

int main(int argc, char const *argv[])
{
    //freopen("sample.txt", "r", stdin);
    int n, G[MAXN + 1][MAXN + 1], t;
    memset(G, 0, sizeof(G));
    cin >> n;
    for (int i = 0; i < n; ++i)
    {
        cin >> t >> t;
        int tmp;
        for (int j = 0; j < t; ++j)
        {
            cin >> tmp;
            G[i + 1][tmp] = 1;
        }
    }
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            if(j != 0)
                cout << " ";
            cout << G[i + 1][j + 1];
        }
        cout << endl;
    }
    return 0;
}

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

int main() {
    ll n;
    cin >> n;
    vector<vector<ll>> mat(n,vector<ll>(n,0));
    for(ll i=0;i<n;i++) {
        ll u,k;
        cin>>u>>k;
        for(ll j=0;j<k;j++) {
            ll tmp;
            cin>>tmp;
            mat[u-1][tmp-1] = 1;
        }
    }
    for(ll i=0;i<n;i++) {
        for(ll j=0;j<n;j++) {
            cout << mat[i][j] << " ";
        }
        cout << endl;
    }
}

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

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>
using namespace std;
static const int N = 100;
int main() {
    
    int n, u, k, v;
    int M[N][N];
    
    cin >> n;
    
    for ( i = 0; i < n; i++ ){
        for ( j = 0; j < n; j++ )
            M[i][j] = 0;
    }
    
    for ( i = 0; i < n; i++ ){
        cin >> u >> k;
        u--;
        for ( j = 0; j < k; j++ ){
            cin >> v;
            v--;
            M[i][j] = 1;
        }
    }
    
    for ( i = 0; i < n; i++ ){
        for ( j = 0; j < n; j++ ){
            if ( j )cout << " ";
            cout << M[i][j];
        }
        cout << endl;
    }

    return 0;
}

C++: #ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#endif
#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>

#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>
#endif

// C++
#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>

#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#endif




#define int long long
#define rng(i,l,r) for(size_t i=(l);i<(r);++i)
#define rep(i,n) rng(i,0,n)
#define gnr(i,l,r) for(size_t i=(r)-1;i>=(l);i--)
#define per(i,b) gnr(i,0,b)
#define ALL(obj) (obj).begin(), (obj).end()   //1,2,3,...
#define rALL(obj) (obj).rbegin(), (obj).rend()//...,3,2,1

using namespace std;
//using ll = long long;


const int MOD = 1000000007;
const int INF = 1e18;

const int dx4[4] = {1, 0, -1, 0};
const int dy4[4] = {0, 1, 0, -1};
const int dx8[8] = {1,1,0,-1,-1,-1,0,1};
const int dy8[8] = {0,1,1,1,0,-1,-1,-1};

const double pi = acos(-1);



template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }


using Graph = vector<vector<int>>;
int gcd(int a,int b){return b?gcd(b,a%b):a;}
//*max_element(ALL(vector))
//count(ALL(vector),num) -> n




void solve(){
    
    // remove the bottom 3 lines when you submit this code.
    std::ifstream in("sample.txt");
    std::cin.rdbuf(in.rdbuf());

    cin.tie(0);
    ios::sync_with_stdio(false);
    
    int G[110][110];
    int n; cin >> n;
    for (int i = 0; i < n; i++) {
        int u; cin >> u; u--;
        int k; cin >> k;
        for (int j = 0; j < k; j++) {
            int v; cin >> v; v--;
            G[u][v] = 1;
            //G[v][i] = 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;
    }
}



signed main() {
    solve();
    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) {cout << 1 <<" "; hantei=1;}
            }
            if(hantei==0) cout <<0<<" ";
        }cout << endl;
    }cout << endl;
}