Go: package main

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

// I/O
type Scanner struct {
	sc *bufio.Scanner
}

func NewScanner() *Scanner {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	sc.Buffer(make([]byte, 1024), int(1e+9))
	return &Scanner{sc}
}

func (s *Scanner) nextStr() string {
	s.sc.Scan()
	return s.sc.Text()
}

func (s *Scanner) nextInt() int {
	i, e := strconv.Atoi(s.nextStr())
	if e != nil {
		panic(e)
	}
	return i
}

func (s *Scanner) nextFloat() float64 {
	f, e := strconv.ParseFloat(s.nextStr(), 64)
	if e != nil {
		panic(e)
	}
	return f
}

func (s *Scanner) nextRuneSlice() []rune {
	return []rune(s.nextStr())
}

func (s *Scanner) nextIntSlice(n int) []int {
	res := make([]int, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextInt()
	}
	return res
}

func (s *Scanner) nextFloatSlice(n int) []float64 {
	res := make([]float64, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextFloat()
	}
	return res
}

// Arithmetic
func max(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m < i {
			m = i
		}
	}
	return m
}

func min(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m > i {
			m = i
		}
	}
	return m
}

func abs(x int) int {
	if x > 0 {
		return x
	}
	return -x
}

func pow(x, y int) int {
	res := 1
	for i := 0; i < y; i++ {
		res *= x
	}
	return res
}

func ceil(a, b int) int {
	if a%b == 0 {
		return a / b
	} else {
		return a/b + 1
	}
}

// Sort
type RuneSlice []rune

func (a RuneSlice) Len() int           { return len(a) }
func (a RuneSlice) Less(i, j int) bool { return a[i] < a[j] }
func (a RuneSlice) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }

// Main
func main() {
	sc := NewScanner()
	wtr := bufio.NewWriter(os.Stdout)
	N := sc.nextInt()
	g := make([][]int, N)
	for i, _ := range g {
		g[i] = make([]int, N)
	}
	for i := 0; i < N; i++ {
		u, k := sc.nextInt(), sc.nextInt()
		for j := 0; j < k; j++ {
			g[u-1][sc.nextInt()-1] = 1
		}
	}

	for _, r := range g {
		for i, num := range r {
			if i > 0 {
				fmt.Fprint(wtr, " ")
			}
			fmt.Fprint(wtr, num)
		}
		fmt.Fprintln(wtr)
	}
	wtr.Flush()
}

C++: #include <iostream>
#include <vector>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <algorithm>
#include <numeric>
#include <cmath>
#include <limits>
#include <string>
#include <bitset>
#include <functional>
#include <iomanip>
#include <cassert>

using namespace std;
constexpr long long MOD = 1e9 + 7;
const double PI = acos(-1);

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

    int num_cities;
    cin >> num_cities;

    vector<vector<int>> graph(num_cities, vector<int>(num_cities, 0));

    int from, to, num_edges;
    for (int i = 0; i < num_cities; i++) {
        cin >> from >> num_edges;
        for (int j = 0; j < num_edges; j++) {
            cin >> to;
            graph[from - 1][to - 1] = 1;
        }
    }

    for (int i = 0; i < num_cities; i++) {
        for (int j = 0; j < num_cities; j++) {
            if (j != 0) cout << ' ';
            cout << graph[i][j];
        }
        cout << endl;
    }

    return 0;
}

C++: #include<iostream>
#include<cstdio>
#include<cstring>
#include<string>
#include<algorithm>
#include<bitset>
#include<vector>
#include<deque>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<cmath>
#include<iomanip>
#include <functional>
using namespace std;
typedef long long ll;
const int mod = 1000000007;
const int INF = 1 << 28;
//cout << fixed << std::setprecision(9)
//memset(a, 0, sizeof(a));
//--------------------------


int n;
int g[110][110];

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

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

	return 0;
}

C++: #include <iostream>
#include <string>
#include <sstream>
#include <list>
#include <stack>
#include <queue>
#include <algorithm>
#include <utility>
#include <vector>
#include <map>
#include <bitset>
#include <cstring>
#include <cstdio>
#include <cmath>

using namespace std;

int main()
{
    int N,M,num1,num2;
    bool data[101][101]={};
    cin>>N;
    for(int i=0;i<N;i++){
        cin>>num1;
        cin>>M;
        for(int j=0;j<M;j++){
            cin>>num2;
            data[num1][num2]=true;
        }
    }
    for(int i=1;i<=N;i++){
        cout<<data[i][1];
        for(int j=2;j<=N;j++){
            cout<<' '<<data[i][j];
        }
        cout<<endl;
    }
}

C++: #include <stdio.h>
#include <vector>
#include <list>
#include <map>
#include <array>
#include <memory>
#include <string>
#include <iostream>
#include <sstream>
#include <algorithm>
#include <cmath>
#include <unordered_map>
#include <stdexcept>


using std::string;
using std::vector;


//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// util
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

std::vector<std::string> split(const std::string& input, char delimiter)
{
    std::istringstream stream(input);

    std::string field;
    std::vector<std::string> result;
    while (std::getline(stream, field, delimiter)) {
        result.push_back(field);
    }
    return result;
}



//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// user func
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void printList(const vector<int>& list) {
    // print
    for(int i = 0; i < list.size(); i++){
        printf("%d", list[i]);
        if ( i + 1 != list.size() ) {
            printf(" ");
        }
    }
    printf("\n");
}



//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// logic
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////



void solve() {
    int n;
    scanf("%d", &n);
    for(int i = 0; i < n; i++){
        int value;
        scanf("%d", &value);
        int k;
        scanf("%d", &k);
        vector<int> row(n, 0);
        for(int j = 0; j < k; j++){
            int link;
            scanf("%d", &link);
            row[link -1] = 1;
        }
        printList(row);
    }
}


//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// main
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int main() {
    solve();
    return 0;
}

C++: #include <set>
#include <map>
#include <list>
#include <queue>
#include <stack>
#include <cmath>
#include <ctype.h>
#include <ctime>
#include <cstdio>
#include <vector>
#include <string>
#include <bitset>
#include <cctype>
#include <cstdlib>
#include <cstring>
#include <utility>
#include <numeric>
#include <complex>
#include <sstream>
#include <fstream>
#include <iomanip>
#include <cassert>
#include <iostream>
#include <iterator>
#include <algorithm>

using namespace std;



int main(){
	int n;
	cin >> n;
	int graph[n+1][n+1];
	for(int i = 0;i <= n;i++){
		for(int j = 0;j <= n;j++){
			graph[i][j] = 0;
		}
	}
	for(int k = 0;k < n;k++){
		int i;
		cin >> i;
		int t;
		cin >> t;
		for(int l = 0;l < t;l++){
			int p;
			cin >> p;
			graph[i][p] = 1;
		}
	}
	for(int i = 1;i <= n;i++){
		for(int j = 1;j <= n;j++){
			if(j != n){
				cout << graph[i][j] << " ";
			}else{
				cout << graph[i][j];
			}
		}
		cout << endl;
	}
	return 0;
}