Go: package main
import (
	"fmt"
	"bufio"
	"os"
	"bytes"
	"strconv"
	"strings"
)

func nextInt(scanner *bufio.Scanner) int {
	scanner.Scan()
	num , _ :=  strconv.Atoi(scanner.Text())
	return num
}


func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Split(bufio.ScanWords)

	N := nextInt(scanner)
	var A [][]int = make([][]int, N)
	for i:=0; i<N; i++ {
		A[i] = make([]int, N)
	}
	for i:=0; i<N; i++{
		idx := nextInt(scanner)
		cnt := nextInt(scanner)
		for j:=0; j<cnt; j++ {
			node := nextInt(scanner)
			A[idx-1][node-1] = 1
		}
	}
	var outBuffer bytes.Buffer
	for i:=0; i<N; i++ {
		outBuffer.WriteString(strings.TrimRight(fmt.Sprintf("%v",A[i])[1:], "]") + "\n")
	}
	fmt.Printf("%s", outBuffer.String())
}

C++: #include <cmath>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <climits>
#include <map>
#include <list>
#include <stack>
#include <queue>
#include <vector>
#include <string>
#include <sstream>
#include <fstream>
#include <iostream>
#include <algorithm>
using namespace std;

int main() {
	int n;
	scanf("%d", &n);
	
	int mat[n+1][n+1];
	for(int i = 0; i < n; i++){
		int u, k;
		scanf("%d %d", &u, &k);
		
		for(int j = 0; j <= n; j++){
			mat[u][j] = 0;
		}
		while(k--){
			int v;
			scanf("%d", &v);
			mat[u][v] = 1;
		}
	}
	
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= n; j++){
			printf("%d%c", mat[i][j], j==n ? '\n' : ' ');
		}
	}
	return 0;
}

C++: // A-Graph.cpp : 此檔案包含 'main' 函式。程式會於該處開始執行及結束執行。
//

#include <iostream>
#include<string>
using namespace std;
int main()
{
	int n = 0;
	cin >> n;
	int **arr = new int *[n];
	for (int i = 0; i < n; i++)
	{
		arr[i] = new int[n];
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			arr[i][j] = 0;
		}
	}
	int n2 = n;
	int x = 0;
	while (n--)
	{
		cin.ignore(100, '\n');
		char *str = new char[n2 * 2];
		cin.get(str, n2 * 2);
		int y = 4;
		for (int k = 0; k < str[2] - '0'; k++)
		{
			int pos = str[y] - '0';
			pos--;
			y = y + 2;
			arr[x][pos] = 1;
		}
		x++;
	}
	for (int i = 0; i < n2; i++)
	{
		for (int j = 0; j < n2; j++)
		{
			cout << arr[i][j] << " ";
		}
		cout << endl;
	}
	return 0;
}

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

int main()
{
	int M[100][100];
	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 i = 0; i < k; i++)
		{
			cin >> v;
			v--;
			M[u][v] = 1; 
		}
	}
	
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < n; j++)
		{
			if(j == 0)
			cout << M[i][j];
			else
			{
				cout << " " << M[i][j];
			}
		}
		cout << endl;
	}
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
// Welcome to my source code!

const int N = 100;

int main() {
    int M[N][N] = {};
    int n, u, k, v;
    cin >> n;
    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;
    }
}

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

int main(){
	int i,k,l,n,m;
	int a[100][100];
	int j[100];
	cin >> n;
	for(m=0;m<100;m++){
		for(l=0;l<100;l++){
			a[m][l]=0;//初期化
		}
	}

	for( m=0 ; m<n ; m++ ){
		cin >> i >> k ;
		for(l=0;l<k;l++){
			cin >>j[l];
			a[i-1][j[l]-1] = 1;//情報読み込みaij→a(i-1)(j-1)
		}
	}
	for( m=0 ; m<n ; m++ ){
		for(l=0;l<n-1;l++){
			cout<<a[m][l]<<" ";
		}
			cout<<a[m][n-1]<<endl;
	}
}

C++: #include <iostream>
using namespace std;
#define N (100)

int main(void){
    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 <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <list>
#include <utility>
#include <ctime>
#define INF 1000000000
#define LINF 9000000000000000000
#define mod 1000000007
 
#define rep(i,n) for(int i=0;i<int(n);i++)
#define rrep(i,n) for(int i=(n);i>=0;i--)
#define REP(i,a,b) for(int i=(a);i<int(b);i++)
#define all(x) (x).begin(),x.end()
#define vector_rsort(x) sort(all(x));reverse(all(x))
#define array_rsort(x,n) sort(x,x+n);reverse(x,x+n);
#define pb push_back
#define mp make_pair
#define MOD(x) (x%(mod))

#define Yes cout<<"Yes"<<endl
#define YES cout<<"YES"<<endl
#define No cout<<"No"<<endl
#define NO cout<<"NO"<<endl
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef pair<int,int> pi;
 
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};
bool debug=false;
/*---------------------------------------------------*/

int n,u,k,v;
int g[105][105];

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

  rep(i,n){
    scanf("%d%d",&u,&k);
    rep(i,k){
      scanf("%d",&v);
      g[u][v]=1;
    }
  }
  
  REP(i,1,n+1){
    printf("%d",g[i][1]);
    REP(j,2,n+1){
      printf(" %d",g[i][j]);
    }
    printf("\n");
  }
  return 0;
}

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

using namespace std;

const int N_MAX = 100;

// グラフ
// 隣接リスト表現の有効グラフGの隣接行列を出力

int main(int argc, char *argv[])
{
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    int G[100][100] = { 0 };

    for (int i = 0; i< n; i++)
    {
        int u, k;
        cin >> u; // 頂点番号
        cin >> k; // 出次数
        for (int i = 0; i < k; i++)
        {
            int v;
            cin >> v;
            G[u-1][v-1] = 1;
        }
    }

    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            if (j) cout << " ";
            cout << G[i][j];
            if (j != n - 1)
                cout << " ";
        }
        cout << endl;
    }
    return 0;
}

C++: #include <iostream>
#include <string>
#include <unordered_map>
#include <stdio.h>
#include <list>
#include <queue>
#include <vector>
#include <algorithm>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; ++i)
typedef long long ll;

int main()
{
	int n;
	cin >> n;
	rep(i,n)
	{
		int hoge;cin>>hoge;
		int u; cin>>u;
		if(u==0)
		{
			rep(j,n)
			{
				if(j)cout<<" ";
				cout<<0;
			}
			cout<<endl;
			continue;
		}else
		{
		queue<int> v;
		rep(j,u){int a;cin>>a;v.push(a);}
		int itr=0;
		rep(j,n)
		{
			if(j)cout<<" ";
			if( (v.front()-1)==j)
			{
				cout<<1;
				v.pop();
			}
			else
			{
				cout<<0;
			}
		
			
			
		
		}
		}
		cout<<endl;
	}
	return 0;
}

C++: #include<iostream>
using namespace std;
int main()
{
  int n,u,k,v,**M;
  cin>>n;
  M=new int*[n];
  for(int i=0;i<n;i++)
    {
      M[i]=new int[n];
      for(int j=0;j<n;j++)
	M[i][j]=0;
    }
  int count=0;
  while(count<n)
    {
      count++;
      cin>>u>>k;
      for(int i=0;i<k;i++)
	{
	  cin>>v;
	  M[u-1][v-1]=1;
	}
    }
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++)
      cout<<M[i][j]<<' ';
    cout<<endl;
  }
}

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

int n;
int M[101][101];
int main() {
    cin >> n;

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

    for (int l = 1; l <= n; ++l) {
        for (int i = 1; i <= n; ++i) {
            cout << M[l][i] << " ";
        }
        cout << endl;
    }

    return 0;
}