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 <algorithm>
#include <iostream>
#include <string>
#include <cstring>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <deque>
#include <iomanip>
#include <limits>
#include <map>
#include <queue>
#include <stack>
#include <vector>

#define FOR(i,k,n) for(int (i) = (k); (i) < (n); ++(i))
#define rep(i,n) FOR(i,0,n)
#define pb push_back
#define all(v) begin(v), end(v)
#define debug(x) cerr << #x << ": " << x << endl
#define debug2(x,y) cerr << #x << ": " << x << ", " << #y << ": " << y << endl

using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> i_i;
typedef pair<i_i, int> p_i;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
template<class T> using vv=vector<vector<T>>;
typedef deque<int> di;
typedef deque<deque<int>> ddi;


int main() {
    int n;
    bool g[101][101] = {};
    cin >> n;
    rep(i,n) {
        int u,k;
        cin  >> u >> k;
        rep(j,k) {
            int tmp;
            cin >> tmp;
            g[u][tmp] = 1;
        }
    }
    FOR(i,1,n+1) {
        FOR(j,1,n+1) {
            cout << g[i][j] << " ";
        }
        cout << endl;
    }
	return 0;
}

C++: 
#include <iostream>

using namespace std;

int a[110][110];

int main(){
    int N;
    cin >> N;
    for(int i = 0;i < N;i++){
        int n,k;
        cin >> n >> k;
        for(int j = 0;j < k;j++){
            int l;
            cin >> l;
            a[i][l-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 << endl;
    }
}

C++: #include <iostream>
using namespace std;
int main() {
  int a[100][100] = {};
  int n, k, idx, v;
  cin >> n;
  for(int i = 0; i < n; ++i) {
	cin >> idx >> k;
	for(int j = 0; j < k; ++j) {
	  cin >> v;
	  a[i][v - 1] = 1;
	}
  }

  for(int i = 0; i < n; ++i) {
	for(int j = 0; j < n; ++j) {
	  cout << a[i][j];
	  cout << (j < n - 1 ? " " : "\n");
	}
  }
  return 0;
}

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

int main() {
  int n;
  cin>>n;
  vector<vector<int>>a(n,vector<int>(n,0));
  for(int i=0;i<n;i++){
    int num;
    cin>>num;
    num--;
    int m;
    cin>>m;
    for(int j=0;j<m;j++){
      int x;
      cin>>x;
      x--;
      a[num][x]++;
    }
  }
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
      cout<<a[i][j];
      if(j!=n-1)cout<<" ";
    }
    cout<<endl;
  }
  return 0;
}

C++: #include <stdio.h>
#include <iostream>
#include <algorithm>
#include <math.h>
#include <stack>

using namespace std;

int minimum=-1;


int main(){
	int n,row,num,col;
	scanf("%d",&n);
	int table[n][n];
	for(int i=0;i<n;i++){
		for(int k=0;k<n;k++){
			table[i][k] = 0;
		}
	}

	for(int i=0;i<n;i++){
		scanf("%d %d",&row,&num);
		for(int k=0;k<num;k++){
			scanf("%d",&col);
			table[row-1][col-1]=1;
		}
	}

	for(int i=0;i<n;i++){
		for(int k=0;k<n-1;k++){
			printf("%d ",table[i][k]);
		}
		printf("%d\n",table[i][n-1]);
	}

    return 0;
}

C++: #include <iostream>
#include <iomanip>
#include <vector>
#include <set>
#include <string>
#include <queue>
#include <algorithm>
#include <map>
#include <cmath>
#include <list>
#include <stack>
#include <cstdio>
#include <cstdlib>
#include <cstring>

#define rep(i, n) for (int i = 0; i < n; i++)

using namespace std;

const int INF = 1 << 30;
const int MOD = 1000000007;
const int MAX = 100000;
const int N = 100;

int M[N][N];

int main() {
	int n; cin >> n;
	rep(i, n) rep(j, n) M[i][j] = 0;
	rep(i, n) {
		int _n, n2; cin >> _n >> n2;
		rep(j, n2) {
			int k; cin >> k;
			M[i][k-1] = 1;
		}
	}
	rep(i, n) {
		rep(j, n) {
			if (j < n-1) cout << M[i][j] << ' ';
			else cout << M[i][j];
		}
		cout << endl;
	}
}

C++: #include<bits/stdc++.h>
using namespace std;
#define max(a,b) (a<b?b:a)
#define abs(x) (x<0?(-x):x)
#define F(i,L,R) for (int i = L; i < R; i++)
#define FE(i,L,R) for (int i = L; i <= R; i++)
#define RF(i,L,R) for (int i = L; i > R; i--)
#define RFE(i,L,R) for (int i = L; i >= R; i--)
#define getI(a) scanf("%d", &a)
#define getII(a,b) scanf("%d%d", &a, &b)
#define getIII(a,b,c) scanf("%d%d%d", &a, &b, &c)
#define VgetI(n) int (n); scanf("%d",&(n))
#define VgetII(n,m) int (n),(m); scanf("%d %d",&(n),&(m))
#define VgetIII(n,m,k) int (n),(m),(k); scanf("%d %d %d",&(n),&(m),&(k))
#define ll long long
#define INF 2000000000
#define nINF -2000000000
#define MOD 1e9+7
#define PI 3.1415926535897932384626
bool matrix[1005][1005];
int main(){
	//freopen("test.out","w",stdout);
	int n;
	scanf("%d",&n);
		int maxV=-INF;
		while(n--){
			VgetII(u,k);
			if(u>maxV) maxV=u;
			while(k--){
				VgetI(to);
				if(to>maxV) maxV=to;
				matrix[u-1][to-1]=1;
			}
		}
		F(i,0,maxV){
			F(j,0,maxV) j==maxV-1?printf("%d\n",matrix[i][j]):printf("%d ",matrix[i][j]);
			//if(i!=maxV-1) puts("");
		}
	//fclose(stdout);
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
    int n,k,u,d;
    cin>>n;
    vector<vector<int> > Adj(n,vector<int>(n,0));
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            Adj[i][j]=0;
        }
    }
    for(int i=0;i<n;i++){
        cin>>k>>u;
        for(int j=0;j<u;j++){
            cin>>d;
            Adj[k-1][d-1]=1;
        }
    }
    
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cout<<Adj[i][j]<<" ";
        }
        cout<<"\n";
    }
    cout<<endl;
    
    return 0;
}