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>

using namespace std;

int main(){

  int n,u,k,v,graph[106][106]={{}};

  cin >> n ;

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

  for(int i = 1; i<= u; i++){
    for(int j = 1; j<= u; j++){
      cout << graph[i][j] << ' ' ; 
    }
    cout << endl;
  }


  return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
	int n;
	int a[101][101];
	memset(a,0,sizeof(a));
	cin>>n;
	int u,k;
	for(int i = 0;i < n;i++){
		cin>>u>>k;
		u--;
		for(int j=0;j<k;j++){
			int x;
			cin>>x;
			x--;
			a[u][x]=1;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(j)cout<<" ";
			cout<<a[i][j];
		}
		cout<<endl;
	}
}

C++: #include <iostream>
using namespace std;
int main(int argc, const char * argv[]) {
    int n;
    bool A[105][105];
    for(int i=0; i<105; i++){
        for(int j=0; j<105; j++){
            A[i][j] = 0;
        }
    }
    cin >> n;
    for(int i=0; i<n; i++){
        int u;
        int k;
        cin >> u >> k;
        u--;
        for(int j=0; j<k; j++){
            int v;
            cin >> v;
            v--;
            A[u][v] = 1;
        }
        
    }
    for(int i=0; i<n; i++){
        for(int j=0; j<n-1; j++){
            cout << A[i][j] << " ";
        }
        cout << A[i][n-1] << endl;
    }
    return 0;
}

C++: #include <bits/stdc++.h>
#include <numeric>
#define REP(i, s, n) for (int i = s; i < n; ++i)
#define rep(i, n) REP(i, 0, n)
#define SORT(c) sort((c).begin(), (c).end())
#define SORT_INV(c) sort((c).begin(), (c).end(), greater<int>())
#define IINF INT_MAX
#define LLINF LLONG_MAX
#define DEBUG true
#define LL long long
#define Num 1000000007
// sort(a.begin(), a.end(), std::greater<int>());
using namespace std;

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

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

int main(){
    int n;
    cin >> n;
    int a[105][105];
    for(int i=1; i<=n; i++){
        for(int j=1; j<=n; j++){
            a[i][j] = 0;
        }
    }
    for(int i=1; i<=n; i++){
        int u, k;
        cin >> u >> k;
        for(int j=1; j<=k; j++){
            int v;
            cin >> v;
            a[u][v] = 1;
        }
    }

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

C++: #include <iostream>
using namespace std;
static const int N=100;

int main() {
  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<<" "<<flush;
      cout<<M[i][j]<<flush;
    }
    cout<<endl;
  }
  return 0;
}

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

#define MAX 100

int main(void){
  int i;
  int n, G_list[MAX];
  int G[MAX+1][MAX+1]={0};
  
  scanf("%d", &n);

  for(i=0; i<n; i++){
    int cnt, num, m;

    scanf("%d %d", &num, &cnt);
    G_list[i]=num;

    for(int j=0; j<cnt; j++){
      scanf("%d", &m);
      G[G_list[i]][m]=1;
    }
  }

  for(int i=0; i<n; i++){
    int num=G_list[i];
    for(int j=0; j<n; j++){
      int m=G_list[j];

      if(j) printf(" ");
      printf("%d", G[num][m]);
    }
    printf("\n");
  }
  
  return 0;
}

C++: #include<functional>
#include<algorithm>
#include<iostream>
#include<utility>
#include<string>
#include<vector>
#include<cmath>
#include<stack>
#include<queue>
#include<deque>
#include<map>
#define rep(i,n) for(int i=0;i<n;i++)
#define loop(i,x,n) for(int i=x;i<n;i++)
#define pf push_front
#define pb push_back
#define int long long
using namespace std;
const int INF=1000000007;
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};
int mp[10000][10000]={};

signed main(){
  int n,u,k;
  cin>>n;
  int ad_m[100][100]={};
  rep(i,n){
    cin>>u>>k;
    rep(j,k){
      int v;
      cin>>v;
      v--;
      ad_m[i][v]+=1;
    }
  }
  rep(i,n){
    rep(j,n){
      cout<<ad_m[i][j];
      if(j<3)cout<<' ';
    }
    cout<<endl;
  }


  return 0;

}

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

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

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) {cout << 1 <<" "; hantei=1;}
            }
            if(hantei==0) cout <<0<<" ";
        }cout << endl;
    }cout << endl;
}

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

using namespace std;

// ---------------------
// repetition
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n) FOR(i,0,n)

// debug
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

// ---------------------
#define INF 922337203685477580
typedef long long ll;

int matrix[110][110];

int main() {
  REP(x, 110) {
    REP(y, 110) {
      matrix[x][y] = 0;
    }
  }


  int n;
  cin >> n;

  REP(_, n) {
    int v, num;
    cin >> v >> num;

    REP(i, num) {
      int cv;
      cin >> cv;
      matrix[v][cv] = 1;
    }
  }


  FOR(x, 1, n + 1) {
    FOR(y, 1, n + 1) {
      cout << " " << matrix[x][y];
    }
    cout << endl;
  }

  return 0;
}