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 <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 <cstdio>
using namespace std;

const int maxn = 100 + 5;

int ch[maxn][maxn];

int main(){
	char c;
	int n;
	scanf("%d",&n);
	for(int i = 1;i <= n; i++){
		int u,k,v;
		scanf("%d%d",&u,&k);
		for(int j = 1;j <= k; j++){
			scanf("%d",&v);
			ch[u][v] = 1;
		}
	}
	for(int i = 1;i <= n; i++){
		for(int j = 1;j <= n; j++){
			if(j != 1)printf(" ");
			printf("%d",ch[i][j]);
		}
		printf("\n");
	}
}

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

using namespace std;

int main(){
  int n;
  cin >> n;
  int i;
  int a[150][150];
  int x,y;
  for (x = 0; x < n; x++) {
    for (y = 0; y < n; y++) {
      a[x][y]=0;
    }
  }

  for (i = 0; i < n; i++) {
    int l;
    cin >> l;
    int k;
    cin >> k;
    int j;
    for (j = 0; j < k; j++) {
      int m=0;
      cin >> m;
      a[l-1][m-1]=1;
    }

  }

  for (x = 0; x < n; x++) {
    for (y = 0; y < n; y++) {
      printf("%d ",a[x][y]);
    }printf("\n");
  }

  return 0;
}

C++: #include <cstdio>
#include <iostream>
#define MAX_VERTEXES 100
#define ZERO 0

using namespace std;

//think easy make easy

int n;//num of vertexes(頂点)
int matrix_graph[MAX_VERTEXES+1+1][MAX_VERTEXES+1+1];//1オリジン

int main(){
	scanf("%d",&n);

	int v_num;
	int k;//v_numの出次数

	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			matrix_graph[i][j] = ZERO;
		}
	}

	for(int i=0;i<n;i++){
		scanf("%d",&v_num);
		scanf("%d",&k);

		for(int j=0;j<k;j++){
			int v_num2;
			scanf("%d",&v_num2);
			matrix_graph[v_num][v_num2] = 1;
		}
	}

	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(j<n) printf("%d ",matrix_graph[i][j]);
			else printf("%d\n",matrix_graph[i][j]);
		}
	}

	return 0;
}

C++: #include <iostream>

using namespace std;



int main(){

  int n,u,k,x;
  int array[124][124] = {{}};
  cin >> n;



  for(int i = 0;i < n;i++){
    cin >> u >> k;
    for(int j = 0;j < k;j++){
      cin >> x;
      array[u - 1][x - 1] = 1;
    }
  }
  for (int i = 0;i < n;i++){
    for(int j = 0;j < n;j++){
      cout << " " << array[i][j];
    }
    cout << endl;
  }
}

C++: #include<cstdio>
int m[101][101];

int main(){
	int i,n,j,k,u,v;
	scanf("%d",&n);
	v = n;
	while(n--){
		scanf("%d",&u);
		scanf("%d",&j);
		while(j--){
			scanf("%d",&i);
			m[u][i] = 1;
		}
	}
	for( i = 1; i <= v; i++ ){
		for( j = 1; j <= v; j++ ){
			if(j!=1) printf(" ");
			printf("%d",m[i][j]);
		}
		printf("\n");
	}
}

C++: #include<cstdio>


int main(){
    int n,u,k,v;
    scanf("%d",&n);
    int G[n+1][n+1];
    for(int i = 0;i <= n;++i){
        for(int j = 0;j <= n;++j){
            G[i][j] = 0;
        }
    }
    for(int i = 0;i < n;++i){
        scanf("%d %d",&u,&k);
        for(int j = 0;j < k;++j){
            scanf("%d",&v);
            G[u][v] = 1;
        }
    }
    for(int i = 1;i <= n;++i){
        for(int j = 1;j <n;++j){
            printf("%d ",G[i][j]);
        }
        printf("%d\n",G[i][n]);
    }
}

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

const static int N = 100;

int main() {
  int n, G[N][N];
  
  cin >> n;

  for ( int i = 0; i < n; i++ ) {
    for ( int j = 0; j < n; j++ ) G[i][j] = 0;
  }

  for ( int i = 0; i < n; i++ ) {
    cin >> v >> m;
    for ( int j = 0; j < m; j++ ) {
      cin >> k;
      G[v][k] = 1
    }
  }

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

  return 0;    
}

C++: 

#include <iostream>
using namespace std;

int main(){
        int n,m,l,i,j;
        cin >> n;
        int f[100][100] =
        for ( i = 0; i < n; i++){
                cin >> m;
                for ( j = 0; j < m; j++){
                        cin >> l;
                        f[m][l] = 1;
                }
        }
        for ( i = 0; i < n; i++){
                for ( j = 0; j < n-1; j++){
                        cout << f[i][j] << " ";
                }
                cout << f[i][n] << endl;
        }
}

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

int main(){
    int n;
    std::cin >> n;
    std::vector<std::vector<int>> adj(n, std::vector<int>(n, 0));
    for(int i=0;i<n;i++){
        int unused, k;
        std::cin >> unused >> k;
        for(int j=0;j<k;j++){
            int p;
            std::cin >> p;
            adj[i][p-1]=1;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            std::cout << adj[i][j];
            if(j==(n-1)) std::cout << "\n";
            else std::cout << " ";
            
        }
    }
    return 0;
}