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 <sstream>
#include <cstdio>
#include <cmath>
#include <cctype>
#include <string>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <algorithm>
#include <functional>

using namespace std;
using ll = long long int;
#define rep(i,n) for(int i = 0; i < n; i++)
#define FOR(i, a, b)  for(int i = (a); i < (b) ; i++)

#define pb push_back
#define SORT(v,n) sort(v, v+n)
#define ALL(x) (x).begin(),(x).end()
#define debug(x) cerr << #x << ": " << x << '\n'
#define elif else if
#define itn ll
#define int ll
const int INF = 100100100;
const int MOD = (int)1e9 + 7;
const double EPS = 1e-9;
///                →,↑,←,↓,↗,↖,↙,↘
int dx[8] = { 1, 0, -1, 0, 1, -1, -1, 1 };
int dy[8] = { 0, 1, 0, -1, 1, 1, -1, -1 };

int h[1010];

int M[110][110];

signed main() {
	ios::sync_with_stdio(false);
	int i, n;
	cin >> n;
	rep(i, n) {
		int u, k;
		cin >> u >> k;
		int j;
		rep(j, k) {
			int v;
			cin >> v;
			M[u][v] = 1;
		}
	}

	rep(i, n) {
		int j;
		rep(j,n){
			if (j) cout << ' ';
			cout << M[i + 1][j + 1];
		}
		cout << endl;
	}
	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
    int n,k,u,d;
    cin>>n;
    vector<vector<int> > Adj(n,vector<int>(n,0));
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            Adj[i][j]=0;
        }
    }
    for(int i=0;i<n;i++){
        cin>>k>>u;
        for(int j=0;j<u,j++){
            cin>>d;
            Adj[k-1][d-1]=1;
        }
    }
    
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cout<<Adj[i][j]<<" ";
        }
        cout<<"\n";
    }
    
    return 0;
}

C++: #include<iostream>

#define MAX 105

int main(){
  int n,u,k;
  int adj[MAX][MAX] = {{0}};
  int A[MAX][MAX] = {{0}};
  std::cin >> n;
  for(int i=1;i<=n;i++){
    std::cin >> u >> k;
    for(int j=1;j<=k;j++){
      std::cin >> adj[u][j];
    }
    adj[u][k+1] = -1;
  }
  //std::cout << "入力\n";

  for(int i=1;i<=n;i++){
    int j=1;
    while(adj[i][j] != -1){
      A[i][adj[i][j]] = 1;
      j++;
    }
    std::cout << A[i][1] ;
    for(j=2;j<=n;j++){
      std::cout << ' ' << A[i][j] ;
    }
    std::cout << '\n';
  }

  return 0;
}

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

int main(){
  int a,b,c,d,g[101][101]={0};
  cin>>a;
  for(int i=0;i<a;i++){
    cin>>b>>c;
    for(int j=0;j<c;j++){
      cin>>d;
      g[b][d]=1;
    }
  }
  for(int i=1;i<=a;i++){
    for(int j=1;j<=a;j++){
      cout<<g[i][j];
      if(a-j>=1)cout<<" ";
    }
    cout<<endl;
  }
  
  return 0;
}

C++: #include<iostream>
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<n;i++)

/* 大文字を小文字に変換 */
char tolower(char c) {return (c + 0x20);}
/* 小文字を大文字に変換 */
char toupr(char c) {return (c - 0x20);}

// if('A'<=s[i] && s[i]<='Z') s[i] += 'a'-'A';

/*
string s = "abcdefg"
s.substr(4) "efg"
s.substr(0,3) "abc"
s.substr(2,4) "cdef"
*/

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

C++: #include <iostream>
#include <cmath>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <algorithm>

typedef long long ll;

using namespace std;

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

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;m++){
	cout<<ushi[k][m]<<" ";
      }cout<<ushi[k][ari];
      cout<<endl;}
}

C++: #include <map>
#include <set>
#include <list>
#include <cmath>
#include <queue>
#include <stack>
#include <cstdio>
#include <string>
#include <vector>
#include <complex>
#include <cstdlib>
#include <cstring>
#include <numeric>
#include <sstream>
#include <iostream>
#include <algorithm>
#include <functional>

#define mp       make_pair
#define pb       push_back
#define all(x)   (x).begin(),(x).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define repi(i,a,b) for(int i = (a); i < (b); i++)

using namespace std;

typedef    long long          ll;
typedef    unsigned long long ull;
typedef    vector<bool>       vb;
typedef    vector<int>        vi;
typedef    vector<vb>         vvb;
typedef    vector<vi>         vvi;
typedef    pair<int,int>      pii;

const int INF=1<<29;
const double EPS=1e-9;

const int dx[]={1,0,-1,0},dy[]={0,-1,0,1};
int n;
int d[120][120];
int main(){
	cin>>n;
	for(int i =0;i < n;i++){
		int u,k;
		cin>>u>>k;
		for(int j =0;j <k;j++){
			int c;
			cin>>c;
			d[u][c]=1;
		}
	}
	for(int i =1;i <=n;i++){
		for(int j =1;j <=n;j++){
			if(j==1)cout <<d[i][j];
			else cout <<" "<<d[i][j];
		}
		cout <<endl;
	}
	return 0;
}

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

using namespace std;
static const int N=100;

int main()
{
    int n,k,v,u,j,i;
    int Adj[N+1][N+1]={0};

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

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

int main(void){
  int m, a[100][100];
  int b[100][100]={0};

  cin >> m;

  for(int i=0; i<m; i++){
    cin >> a[i][0];
    cin >> a[i][1];

    for(int j=2; j<a[i][1]+2; j++){
      cin >> a[i][j];
      b[i][ a[i][j]-1 ] = 1;
    }
  }

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