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;

const static int N = 100;

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

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

  return 0;    
}

C++: #include <algorithm>
#include <bitset>
#include <cassert>
#include <cmath>
#include <iostream>
#include <map>
#include <numeric>
#include <set>
#include <string>
#include <vector>

// Acknowledgement: Special thanks to kyomukyomupurin, who developed this
// template.
template <class T, class U>
std::ostream& operator<<(std::ostream& os, const std::pair<T, U>& p) {
  return os << '(' << p.first << ", " << p.second << ')';
}

template <class T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& vec) {
  int n = 0;
  for (auto e : vec) os << (n++ ? ", " : "{") << e;
  return os << (n ? "}" : "{}");
}

template <class T>
std::ostream& operator<<(std::ostream& os, const std::set<T>& st) {
  int n = 0;
  for (auto e : st) os << (n++ ? ", " : "{") << e;
  return os << (n ? "}" : "{}");
}

template <class T, class U>
std::ostream& operator<<(std::ostream& os, const std::map<T, U>& mp) {
  int n = 0;
  for (auto e : mp) os << (n++ ? ", " : "{") << e;
  return os << (n ? "}" : "{}");
}

template <class T>
std::istream& operator>>(std::istream& is, std::vector<T>& vec) {
  for (T& e : vec) is >> e;
  return is;
}

#ifdef LOCAL
#define debug(...) \
  std::cerr << "[" << #__VA_ARGS__ << "]: ", debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif

void debug_out() { std::cerr << '\n'; }

template <class Head, class... Tail>
void debug_out(Head&& head, Tail&&... tail) {
  std::cerr << head;
  if (sizeof...(Tail) != 0) std::cerr << ", ";
  debug_out(std::forward<Tail>(tail)...);
}
using namespace std;
using int64 = long long;

int main() {
  int n;
  cin >> n;
  vector<vector<int>> g(n, vector<int>(n));
  int u, k, v;
  for (int i = 0; i < n; i++) {
    cin >> u >> k;
    for (int j = 0; j < k; j++) {
      cin >> v;
      g[u - 1][v - 1] = 1;
    }
  }
  debug(g);
  string ans = "";
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      ans += to_string(g[i][j]) + " ";
    }
    ans.pop_back();
    ans += "\n";
  }
  cout << ans;
  return 0;
}

C++: #include<cstdio>
#include<iostream>
#include<stack>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cstdlib>
#define _USE_MATH_DEFINES // M_PI????????????????????????
#include<math.h>
#pragma warning(disable:4996)
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; // u??¨v?????????????????????
		}
	}

	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			if(j) cout << " ";
			cout << M[i][j];
		}
		cout << "\n";
	}
	return 0;
}

C++: #include <iostream>

constexpr int MAXN = 100;
int V[MAXN][MAXN];
int main() {
    int n;
    std::cin >> n;
    for (int i = 0; i < n; i++) {
        int id, e_num;
        std::cin >> id >> e_num;
        for (int j = 0; j < e_num; j++) {
            int t;
            std::cin >> t;
            V[id - 1][t - 1] = 1;
        }
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (j) std::cout << " ";
            std::cout << V[i][j];
        }
        std::cout << std::endl;
    }
}

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

int graph[101][101];
int main(){
  int n;
  cin>>n;
  for(int i=1;i<=n;i++){
    int u,k,v; cin>>u>>k;
    for(int j=1;j<=k;j++){
      cin>>v;
      graph[u][v]=1;
    }
  }

  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
      if(j-1) cout<<" ";
      cout<<graph[i][j];
    }
    cout<<"\n";
  }
}

C++: #include<iostream>

using namespace std;

int main () {

    int n, u, k, v, M[100][100], 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++) {
            cin >> v;
            v--;
            M[u][v] = 1;
        }
    }

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

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 != 0 ) {cout << " ";}
            cout << M[i][j];
        }
        cout << endl;
    }

    return 0;
}

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

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

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

C++: #include <stdio.h>

int main(void) {
	int i,j,n,u, k, V[200][200],v;
	scanf("%d", &n);
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= n; j++) {
			V[i][j] = 0;
		}
	}
	for (i = 1; i <= n; i++) {
		scanf("%d %d", &u,&k);
		for (j = 1; j <= k;j++) {
			scanf("%d", &v);
			V[i][v] = 1;
		}
	}
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= n; j++) {
			printf("%d", V[i][j]);
			if (j < n) printf(" ");
		}
		printf("\n");
	}
	return 0;
}