Go: package main

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

var sc = bufio.NewScanner(os.Stdin)

func nextInt() int {
	sc.Scan()
	i, _ := strconv.Atoi(sc.Text())
	return i
}
func main() {
	sc.Split(bufio.ScanWords)

	n := nextInt()

	graph := make([][]int, n)
	for i := 0; i < n; i++ {
		graph[i] = make([]int, n)
	}
	for i := 0; i < n; i++ {
		s := nextInt()
		t := nextInt()
		if t == 0 {
			continue
		}
		for i := 0; i < t; i++ {
			u := nextInt()
			graph[s-1][u-1] = 1
		}
	}
	for i := range graph {
		for j := range graph[i] {
			if j == n-1 {
				fmt.Printf("%d\n", graph[i][j])
			} else {
				fmt.Printf("%d ", graph[i][j])
			}
		}
	}
}

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

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

    std::vector<std::vector<int>> matrix(n, std::vector<int>(n, 0));
    for(int i = 0; i < n; ++i){
        int m, l;
        std::cin >> m >> l;
        for(int j = 0; j < l; ++j){
            int index;
            std::cin >> index;
            ++matrix.at(m - 1).at(index - 1);
        }
    }

    for(int i = 0; i < n; ++i){
        for(int j = 0; j < n; ++j){
            std::cout << matrix.at(i).at(j);
            if(n - 1 != j){
                std::cout << " ";
            }else{
                std::cout << std::endl;
            }
        }
    }

    return 0;
}

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

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

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            cout << (adj[i][j] ? 1 : 0);
            if (j != n - 1)
                cout << ' ';
        }
        cout << endl;
    }
}

C++: #include <map>
#include <set>
#include <list>
#include <cmath>
#include <queue>
#include <stack>
#include <cstdio>
#include <string>
#include <vector>
#include <complex>
#include <cstdlib>
#include <cstring>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <functional>
 
#define mp       make_pair
#define pb       push_back
#define all(x)   (x).begin(),(x).end()
#define rep(i,n) for(int i=0;i<(n);i++)
 
using namespace std;
 
typedef    long long          ll;
typedef    unsigned long long ull;
typedef    vector<bool>       vb;
typedef    vector<int>        vi;
typedef    vector<vb>         vvb;
typedef    vector<vi>         vvi;
typedef    pair<int,int>      pii;
 
const int INF=1<<29;
const double EPS=1e-9;
 
const int dx[]={1,0,-1,0},dy[]={0,-1,0,1};
int main(int argc, char const *argv[]) {
	int N;
	cin >> N;
	std::vector<vector<int> > G(N, vector<int>(N));
	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--;
			G[u][v] = 1;
		}
	}
	for (int i = 0; i < N; ++i) {
		for (int j = 0; j < N; ++j) {
			cout << G[i][j] << " ";
		}
		cout << endl;
	}
	return 0;
}

C++: //ALDS1_11_A:Graph
#include <bits/stdc++.h>
using namespace std;
#define LL_MIN -9223372036854775808
#define LL_MAX 9223372036854775807

int main(){
    int n;
    cin >> n;
    int V[101][101];
    for(int i=0; i<=n; i++)
        for(int j=0; j<=n; j++)
            V[i][j] = 0;
    for(int i=0; i<n; i++){
        int u,k;
        cin >> u >> k;
        for(int j=0; j<k; j++){
            int v;
            cin >> v;
            V[u][v] = 1;
        }
    }
    for(int i=1; i<=n; i++){
        for(int j=1; j<=n; j++){
            if(j-1) cout << " ";
            cout << V[i][j];
        }
        cout << endl;
    }
}

C++: #include<iostream>
using namespace std;
int main() {
    bool f[100][100];
    for (int i = 0; i < 100; i++)for (int j = 0; j < 100; j++)f[i][j] = false;
    int n, u, k, v;
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> u >> k;
        for (int j = 0; j < k; j++) {
            cin >> v;
            f[u - 1][v - 1] = true;
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (j)cout << " ";
            cout << f[i][j];
        }
        cout << endl;
    }
    return 0;
}

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

void InputSet(std::vector<int> & a) {
	int n;
	cin >> n;
	a.resize(n,0);
	for(int i=0;i<n;++i) {
		cin >> a.at(i);
		a.at(i)--;
	}
}
int main(){
	//u k v1 v2 ... vk
	int n;
	cin >> n;
	vector<vector<int> > Ad;
	Ad.resize(n);
	for(int k=0;k<n;++k) {
		int u;
		cin >> u;
		--u;
		InputSet(Ad[u]);
	}
	for(int i=0;i<n;++i){
		string a(n,'0');
		for(int j=0;j<(int)Ad[i].size();++j){
			a.at(Ad[i][j]) = '1';
		}
		for(int j=0;j<n;++j){
			if(j==0){
				cout << a[j];
			} else  {
				cout << " " << a[j];
			}
		}
		cout << endl;
	}
}

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

using namespace std;

int N;

int main()
{
	cin >> N;

	vector<vector<bool> > M(N, vector<bool>(N));

	int u, k, v;

	for (int i = 0; i < N; i++)
	{
		cin >> u >> k;

		for (int i = 0; i < k; i++)
		{
			cin >> v;

			M[u - 1][v - 1] = true;
		}
	}

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

			if (j++ != N)
			{
				cout << ' ';
			}
		}

		cout << endl;
	}

	return 0;
}

C++: #include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < n; ++i)
#define FOR(i, a, b) for (int i = a; i < b; ++i)
#define ALL(vec) vec.begin(), vec.end()
#define rALL(vec) vec.rbegin(), vec.rend()
using namespace std;
using ll = long long;

int main() {
    int n;
    cin >> n;
    vector<vector<int>> vec(n, vector<int>(n, 0));
    rep(i, n) {
        int u, k;
        cin >> u >> k;
        rep(j, k) {
            int v;
            cin >> v;
            vec[i][--v] = 1;
        }
    }
    rep(i, n) rep(j, n) {
        if (j != n - 1) cout << vec[i][j] << " ";
        else cout << vec[i][j] << endl;
    }
    return 0;
}

C++: //
//  main.cpp
//  graph
//
//  Created by ???????????? on 2017/10/22.
//  Copyright ?? 2017 ????????????. All rights reserved.
//

#include <iostream>
#include <stdio.h>

using namespace std;

int main(int argc, const char * argv[]) {
    int n, i, j, id, num, node;
    scanf("%d", &n);
    int A[n][n];
    
    //initialize with 0
    for(i = 0; i < n; i++){
        for(j = 0; j < n; j++){
            A[i][j] = 0;
        }
    }
    
    for (i = 0; i < n; i++){
        scanf("%d", &id);
        scanf("%d", &num);
        for(j = 0; j < num; j++){
            scanf("%d", &node);
            A[id-1][node-1] = 1;
        }
    }
    
    for(i = 0; i < n; i++){
        for(j = 0; j < n; j++){
            if(i) cout << " ";
            cout<<A[i][j];
        }
        cout<<endl;
    }
    
//    std::cout << "Hello, World!\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, i, j;

	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++ ) {
			scanf("%d", &v);
			v--;
			M[u][v] = 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++: #include <iostream>
#include <vector>
#include <cstdio>
using namespace std;

int main()
{
	int n, k, u, v;
	cin >> n;
	// N * N matrix filled with 0
	vector< vector<int> > mat(n, vector<int>(n, 0));

	for(int i=0; i<n; i++){
		cin >> u >> k;
		// adjust 0 origen
		u--;
		for(int j=0; j<k; j++){
			cin >> v;
			//cout << "vertex: " << v << '\n';
			// adjust 0 origen
			v--;
			mat[u][v] += 1;
		}
		//cout << '\n';
	}

	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			printf("%d ", mat[i][j]);
		}
		cout << endl;
	}
	return 0;
}