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 <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;
}cout << endl;

C++: #include<iostream>
#include<string>
#include<algorithm>
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 << " ";
      cout << M[i][j];
    }
    cout << endl;
  }
  return 0;
}

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++) {
      cout << a[x][y]<<" ";
    } cout << endl;
  }

  return 0;
}

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

using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;

#define MOD 1000000007
#define REP(i, N) for (int i = 0; i < N; ++i)
#define REP1(i, N) for (int i = 1; i <= N; ++i)
#define RREP(i, N) for (int i = N - 1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()

int g[100][100];

int main() {
  int n;
  cin >> n;
  REP(i, n) {
    int u, k;
    cin >> u >> k;
    REP(j, k) {
      int v;
      cin >> v;
      g[u - 1][v - 1] = 1;
    }
  }
  REP(i, n) {
    REP(j, n) {
      if (j) cout << " ";
      cout << g[i][j];
    }
    cout << "\n";
  }
  return 0;
}

C++: //16D8103012G 三品海渡
#include<iostream>
#include<vector>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<vector<int>> ln(n, vector<int>(n+1, 0));
  vector<vector<int>> m(n,vector<int>(n,0));
  vector<int> rem(n, 0);
  for (int i = 0; i < n; i++)
    {
      cin >> ln[i][0];
      cin >> ln[i][1];
      for (int j = 2; j < ln[i][1]+2; j++)
	{
	  cin >> ln[i][j];
	}
    }
  for (int i = 0; i < n; i++)
    {
      for (int j = 2; j < n; j++)
	{
	  if (ln[i][j] != 0 )
	    {
	      m[i][ln[i][j]-1] = 1;
	    }
	}
    }
  for (int i = 0; i < n; i++)
    {
      for (int j = 0; j < n; j++)
	{
	  cout << m[i][j];
	  if(j!=n-1)
	    {
	      cout << " ";
	    }
	}
      cout << endl;
    }
  return 0;
}

C++: #include<stdio.h>

int main(void) {
	int n, a[100][100] = {0}, u, k, v, i, j;
	
	scanf("%d", &n);
	for (i = 0; i < n; i++)
	{
		scanf("%d", &u);
		scanf("%d", &k);
		for (j = 0; j < k; j++)
		{
			scanf("%d", &v);
			a[u - 1][v - 1] = 1;
		}
	}
	
	for (i = 0; i < n; i++)
	{
		for (j = 0; j < n; j++)
		{
			printf("%d", a[i][j]);
			if (j != n - 1) printf(" ");
		}
		printf("\n");
	}
	
	return 0;
}

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

int main() {
	int N[N][N];
	int n, u, k, v, 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++ ) {
			scanf("%d", &v);
			v--;
			M[u][v] = 1;
		}
	}

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

	return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <set>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <functional>
#include <map>
#include <cmath>
#include <queue>

using namespace std;

int main() {


    int n;scanf("%d",&n);
    int u;
    int k;
    vector<vector<int> > graph;
    graph.resize(n);
    for(int i=0;i<n;i++){
        graph[i].resize(n);
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            graph[i][j]=0;
        }
    }

    for(int i=0;i<n;i++){
        scanf("%d",&u);
        scanf("%d",&k);
        int value;
        for(int j=0;j<k;j++){
            scanf("%d",&value);
            graph[u-1][value-1]=1;
        }
    }

    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            printf("%d ",graph[i][j]);
        }
        if(i!=n-1) {
            printf("\n");
        }
    }

    return 0;
}

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

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

  int mat[n][n];
  for(int i=0;i<n;i++)
    for(int j=0;j<n;j++)
      mat[i][j]=0;

  int u, k;
  cin >> u >> k;
  for(int i=0;i<k;i++){
    mat[u-1][k-1]=1;
  }

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

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

int main(){
    int n;
    std::cin >> n;
    std::vector<int> Adj[n];
    //input_graph
    int u, k, v;
    for(int i=0; i<n; i++){
        std::cin >> u >> k;
        for(int j=0; j<k; j++){
            std::cin >> v;
            Adj[u-1].push_back(v);
        }
    }

    //input_A
    int A[n][n] = {0};
    for(int i=0; i<n; i++){
        int len = Adj[i].size();
        for(int j=0; j<len; j++){
            A[i][Adj[i][j]-1] = 1;
        }
    }

    //output_A
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            if(j+1==n)  std::cout << A[i][j] << '\n';
            else        std::cout << A[i][j] << " ";
        }
    }
    return 0;
}

C++: include<iostream>
#include<cstdio>
#define N 101
using namespace std;

int main(){

  int n,n2,data,u;
  int g[N][N]; 
 //load n
  cin >>n;

  //initialize
  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,&n2);
    for(int j=0;j<n2;j++){
      scanf("%d",&data);
      g[u][data]=1;
    }
  }

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

  return 0;
}

C++: #include<bits/stdc++.h>
#define N 105
using namespace std;
int n,u,k,v,e[N][N];

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