Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"sort"
	"strconv"
)

func main() {
	scn := bufio.NewScanner(os.Stdin)
	scn.Split(bufio.ScanWords)
	nextInt := func() int { scn.Scan(); r, _ := strconv.Atoi(scn.Text()); return r }
	w := bufio.NewWriter(os.Stdout)

	n := nextInt()
	v := make([][]int, n)
	for i := 0; i < n; i++ {
		u := nextInt()
		k := nextInt()
		for j := 0; j < k; j++ {
			v[u-1] = append(v[u-1], nextInt())
		}
	}

	for _, vvs := range v {
		for j := 1; j <= n; j++ {
			if j > 1 {
				fmt.Fprint(w, " ")
			}
			p := sort.SearchInts(vvs, j)
			if p < len(vvs) && vvs[p] == j {
				fmt.Fprint(w, 1)
			} else {
				fmt.Fprint(w, 0)
			}
		}
		fmt.Fprintln(w)
	}

	w.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-1){
                        cout << 1 <<" "; 
                        hantei = 1;
                    }else{
                        cout << 1;
                        hantei = 1;
                    }    
                }
            }
            if(hantei==0){ 
                if(j!=n-1){
                    cout <<0<<" ";
                }else{
                    cout << 0;
                }
                
            }
        }cout << endl;
    }
}

C++: #include<iostream>
#include<stdio.h>
using  namespace std;
int main () {
    int n;
    int V[101][101] = { 0 };
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        int u, c;
        scanf("%d %d", &u, &c);
        for (int j = 0; j < c; j++) {
            int ux;
            scanf("%d", &ux);
            V[u][ux] = 1;
        }
    }
    
    for (int i = 1; i < n+1; i++) {
        for (int j = 1; j < n+1; j++) {
            if (j != n) {
                printf("%d ", V[i][j]);
            }
            else {
                printf("%d" , V[i][j]);
            }
        }
        printf("\n");
    }
    
    
    return 0;
}

C++: #include <stdio.h>
#define N 101

int main(){

  int u,k,i,j,v,n;
  int a[N][N];
 
  scanf("%d",&n);

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

  return 0;

}

C++: #include<iostream>
#include<vector>
using namespace std;
int judge(int i,int n,int variable,vector< vector<int> > &v)
{
  for(int j=0;j<v[variable].size();++j){
    if(i==v[variable][j]){
      return 1;
      break;
    }
  }
  return 0;
}
int main()
{
  int n,u,k,vv;
  cin>>n;
  vector< vector<int> > v(n),a(n,vector<int>(n));
  for(int variable=0;variable<n;++variable){
    cin>>u>>k;
    for(int i=0;i<k;++i){
      cin>>vv;
      v[variable].push_back(vv);
    }
  }
  for(int variable=0;variable<n;++variable)
    for(int i=1;i<=n;++i)
      a[variable][i-1]=judge(i,n,variable,v);
  for(int variable=0;variable<n;++variable){
    for(int i=0;i<n;++i){
      cout<<a[variable][i]<<" "<<flush;
    }
    cout<<endl;
  }
}

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

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

  for (int i = 0; i < n; i++) {
    for (int j = 0; j < n; j++) {
      if (j < n - 1) cout << M[i][j] << ' ';
      else cout << M[i][j] << endl;
    }
  }
};

C++: #include <cstdio>
#include <iostream>
#include <cmath>
#include <ctype.h>
#include <string>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <map>
#include <queue>
#include <utility>
#include <vector>
#include <set>
#include <list>
#include <cstring>
#include <stack>

using namespace std;

#define mod 1000000007

int main()
{
	int n;
	cin >> n;
	int graph[101][101] = {};
	for(int i = 0; i < n; i++){
		int u, k;
		cin >> u >> k;
		u--;
		for(int j = 0; j < k; j++){
			int v;
			cin >> v;
			v--;
			graph[u][v] = 1;
		}
	}
	for(int i = 0; i < n; i++){
		for(int j = 0; j < n; j++){
			cout << graph[i][j];
			if(j == n - 1) cout << endl;
			else cout << " ";
		}
	}
}

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

int ari;
int jigoku[102];
int u[102];
int v[102][102];
int ushi[102][102];
int main(){
  cin>>ari;
  for(int i=1;i<ari+1;i++){
    cin>>u[i]>>jigoku[u[i]];
      for(int j=1;j<jigoku[u[i]]+1;j++){
	cin>>v[u[i]][j];
      }
  }
  //for(int uma=1;uma<ari+1;uma++){cout<<u[uma];}
  for(int k=1;k<ari+1;k++){
    for(int l=1;l<jigoku[k]+1;l++){
      for(int m=1;m<ari+1;m++){
	//cout<<v[k][l];
	if(v[k][l]==u[m]){ushi[k][m]=1;}
	//cout<<ushi[k][m];
      }
    }
  }
    for(int k=1;k<ari+1;k++){
      for(int m=1;m<ari+1;m++){
	cout<<ushi[k][m];}
      cout<<endl;}
}

C++: #include <iostream>
#include <vector>
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 u, k, v;
        cin >> u >> k;
        for (int j=0; j<k; j++) {
            cin >> v;
            a[u-1][v-1] = 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;
    }
}

C++: //
// Created by 李青坪 on 2018/10/31.
//

#include <cstdio>
#include <algorithm>

#define MAXN 101
using namespace std;

int graph[MAXN][MAXN];

void init(){
    for (auto &i : graph) {
        fill(i, i +MAXN, 0);
    }
}

int main(){
    int n;
    scanf("%d", &n);
    init();
    int v, dgr;
    for (int i = 0; i < n; ++i) {
        scanf("%d %d", &v, &dgr);
        int node;
        for (int j = 0; j < dgr; ++j) {
            scanf("%d", &node);
            graph[v][node] = 1;
        }
    }
    for (int k = 1; k <= n; ++k) {
        for (int i = 1; i <= n; ++i) {
            if (i-1) printf(" ");
            printf("%d", graph[k][i]);
        }
        printf("\n");
    }
}
/*
4
1 2 2 4
2 1 4
3 0
4 1 3

 */

C++: #include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); i++)
static const int N = 100;

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

	rep(i, n) rep(j, n) a[i][j] = 0;

	rep(i, n) {
		cin >> u >> k;
		u--;
		rep(j, k) {
			cin >> v;
			v--;
			a[u][v]++;
		}
	}


	rep(i, n){
		rep(j, n) {
			if (j) cout << " ";
			cout << a[i][j];
		}
		cout << endl;
	}

	return 0;
}

C++: #include <algorithm>
#include <iostream>
#include <sstream>

using namespace std;

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

  int A[n + 1][n + 1];
  for (auto row : A) {
    fill(row, row + n + 1, 0);
  }

  for (string line; getline(cin, line);) {
    istringstream is{line};
    int i, j;
    is >> i;
    int k;
    is >> k; // # of neighbors; don't use
    while (is >> j)
      A[i][j] = 1;
  }

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