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<bits/stdc++.h>
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;
#define ALL(x) (x).begin(), (x).end()
#define REP(i ,n) for(int i = 0; i < (int)(n); i++)
#define pb push_back
typedef vector<int>vint;
typedef vector<ll>vll;
template<typename T> istream &operator>>(istream &is, vector<T> &vec){ for (auto &v : vec) is >> v; return is; }
template<typename A,typename B>inline void chmin(A &a,B b){if(a>b)a=b;}
template<typename A,typename B>inline void chmax(A &a,B b){if(a<b)a=b;}

int main()
{
    int N;
    cin >> N;
    int G[N][N];
    REP(i,N){
        REP(j,N){
            G[i][j] = 0;
        }
    }
    REP(i,N){
        int U,K,v;
        cin >> U >> K;
        U--;
        REP(k,K){
            cin >> v;
            v--;
            G[U][v] = 1;
        }
    }
    REP(i,N){
        REP(j,N){
            if(0 == j)cout << G[i][j];
            else cout << " " << G[i][j];
        }
        cout << endl;
    }
}

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

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++){
      if(j != 1) cout <<  ' '<< graph[i][j] ;
      else cout << graph[i][j] ;
    }
    cout << endl;
  }


  return 0;
}

C++: #include <stdio.h>
#define N 102

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=1;i<=N;i++){
    for(j=1;j<=N;j++){
      if(a[i][j]==NULL)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>
using namespace std;
static const int N=100;

int main(){
    //0 0 ??????????????\??????
    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;
        //??¬??¢???0??????
        u--;
        for(int j=0;j<k;j++){
            cin>>v;
            //??¬??¢???0??????
            v--;
            //??¨u???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;
    }
}

C++: #include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)
#define rep2(i,x,n) for(int i=x; i<(n); i++)
#define ALL(n) begin(n),end(n)
#define INF ((1<<30)-1)
#define LINF (1LL<<60)
#define EPS (1e-10)
typedef long long Int;
typedef pair<Int, Int> P;
struct cww{cww(){ios::sync_with_stdio(false);cin.tie(0);}}star;


int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    vector<vector<int>> edge(110);
    int n; cin>>n;
    for(int i=0; i<n; i++)
    {
        int u; cin>>u;
        u--;
        int k; cin>>k;
        if(k!=0) {
        for(int j=0; j<k; j++){
            int v; cin>>v;
            v--;
            edge[u].push_back(v);
        }
    }
    }
    for(int i=0; i<n; i++){
        vector<int> ans(n,0);
        for(int j=0; j<edge[i].size(); j++){
            ans[edge[i][j]]++;
        }
        for(int k=0; k<n; k++){
            cout<<ans[k]<<(k==n-1?'\n':' ');
        }
    }
    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"<<endl;
    }
    
    return 0;
}

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

int main() {
	int n;
	cin >> n;
	int x[101][101];
	for (int i = 0;i < n;i++) {
		for (int j = 0;j < n;j++) {
			x[i][j] = 0;
		}
	}
	int u, k, v;
	for (int i = 0;i < n;i++) {
		cin >> u >> k;
		u = u - 1;
		for (int j = 0;j < k;j++) {
			cin >> v;
			v = v - 1;
			x[u][v] = 1;
		}
	}

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

	return 0;
}

C++: 
#include<iostream>

using namespace std;
static const int N=100;
int main(){
    int n,u,k,v;
    
    int M[N][N];
    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>
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 <string>
using namespace std;

int main(int argc, char* argv[]) {
    int n, u, k, v;
    cin >> n;
    int G[n][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 >> u >> k;
        for (int j = 0; j < k; j++){
            cin >> v;
            G[i][v-1] = 1;
        }
    }

    for (int i = 0; i < n; i++){
        for (int j = 0; j < n; j++){
            cout << G[i][j];
            if (j != n-1) cout << " ";
        }
        cout << endl;
    }
    return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(void){
	int n;
	array<array<int,101>,101>arr;
	int u,k,v;
	int i,j;
	
	cin>>n;
	for(i=1;i<=n;i++){
		for(j=1;j<=n;j++){
			arr[i][j]=0;
		}
	}
	
	for(i=0;i<n;i++){
		cin>>u>>k;
		for(j=0;j<k;j++){
			cin>>v;
			arr[u][v]=1;
		}
	}
	for(i=1;i<=n;i++){
		cout<<arr[i][1];
		for(j=2;j<=n;j++){
			cout<<" "<<arr[i][j];
		}
		cout<<endl;
	}
	return 0;
}