Go: package main

import (
	"fmt"
)

func main() {
	var n int
	fmt.Scan(&n)
	g := make([][]int, n)
	for i := 0; i < n; i++ {
		g[i] = make([]int, n)
	}

	for i := 0; i < n; i++ {
		var u,k int
		fmt.Scan(&u)
		fmt.Scan(&k)
		for j := 0; j < k; j++ {
			var v int
			fmt.Scan(&v)
			g[u-1][v-1] = 1
		}
	}

	for i := 0; i < n; i++ {
		fmt.Print(g[i][0])
		for j := 1; j < n; j++ {
			fmt.Printf(" %d", g[i][j])
		}
		fmt.Println()
	}
}

C++: #include <iostream>
#include <utility>
#include <string>
#include <algorithm>
#include <set>
#include <deque>
#include <vector>
#define MAX 10010
#define rep(i,p) for(int i=0;i<p;i++)
#define pb push_back
using namespace std;
int n,hoge,foo;
int graph[MAX][MAX] = {0};
int main(){
  cin >> n;
  rep(i,n) {
    cin >> hoge >> foo;
    rep(j,foo) {
      cin >> hoge;
      graph[i][hoge-1] = 1;
    }
  }
  rep(i,n) {
    rep(j,n) cout << graph[i][j] << " ";
    cout << endl;
  }
  return 0;
}

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

using namespace std;

const int N_MAX = 100;

// グラフ
// 隣接リスト表現の有効グラフGの隣接行列を出力

int main(int argc, char *argv[])
{
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    int G[100][100] = { 0 };

    for (int i = 0; i< n; i++)
    {
        int u, k;
        cin >> u; // 頂点番号
        cin >> k; // 出次数
        for (int i = 0; i < k; i++)
        {
            int v;
            cin >> v;
            G[u-1][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 <iostream>
#include <cassert>
#include <string.h>
#include <vector>
#include <map>

using namespace std;

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

    vector< vector<int> > matrix;
    for (int i = 0; i < n; ++i)
    {
        vector<int> line;
        for (int j = 0; j < n; ++j)
        {
            line.push_back(0);
        }
        matrix.push_back(line);
    }

    for (int i = 0; i < n; ++i)
    {
        int vertex;
        int degree;

        cin >> vertex;
        cin >> degree;

        assert(vertex <= n);
        assert(degree <= n);

        for (int j = 0; j < degree; ++j)
        {
            int adj;
            cin >> adj;
            assert(adj <= n);
            matrix[vertex - 1][adj - 1] = 1;
        }
    }

    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            string delim = (j == (n - 1)) ? "\n" : " ";
            cout << matrix[i][j] << delim;
        }
    }

    return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
template<typename T>
ostream& operator<<(ostream& os, const vector<T>& v){
  const char* dlm = "";
  for(const auto& x:v) cout << exchange(dlm, " ") << x;
  return os;
}
int32_t main(){
  size_t n; cin>>n;
  vector<vector<size_t>> adj(n);
  for(size_t i=0; i<n; ++i){
    size_t u,k; cin>>u>>k;
    adj[u-1].resize(k);
    for(auto&& x:adj[u-1]) cin>>x;
  }
  vector<vector<size_t>> m(n,vector<size_t>(n,0));
  for(size_t i=0; i<n; ++i){
    for(const auto& x:adj[i]) m[i][x-1]=1;
  }
  for(const auto& x:m) cout<<x<<endl;
}

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

int G[110][110];

int main(){
    int N; cin >> N;
    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--;
            G[u][v] = 1;
        }
    }

    for( int i = 0; i < N; i++ ){
        for( int j = 0; j < N; j++ ){
            cout << G[i][j] << ( ( j == N - 1 ) ? "\n" : " " );
        }
    }
}

C++: #include<stdio.h>
using namespace std;
static const int N = 100;
int main() {
    
    int n, u, k, v;
    int M[N][N];
    
    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[i][j] = 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++: #define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES
#include <iostream>
#include <cstdio>
using namespace std;
int  v[102][101], n;
int main() {
	int u, k, s;
	cin >> n;
	for (int i = 0; i <= n; i++) {
		for (int j = 0; j <= n; j++) {
			v[i][j] = 0;
		}
	}
	for (int i = 0; i < n; i++) {
		cin >> u;
		cin >> k;
		for (int j = 0; j < k; j++) {
			cin >> s;
			v[u][s] = 1;
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			if (j > 1) cout << " ";
			cout << v[i][j];
		}
		cout << endl;
	}	return 0;
}

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

#define MAX 100
int main() {
	int n = 0;
	scanf("%d", &n);
	int M[MAX][MAX] = { 0 };
	for (int i = 0; i < n; i++) {
		int u, k;
		scanf("%d%d", &u, &k);
		u--;
		for (int j = 0; j < k; j++) {
			int v = 0;
			scanf("%d", &v);
			v--;
			M[u][v] = 1;
		}
	}

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

}

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

int main(){
	int n,deg; cin>>n;
	int **vertex,**matrix;
	vertex = new int*[n]; for(int i=0;i<n;i++) vertex[i] = new int[n+1];
	matrix = new int*[n]; for(int i=0;i<n;i++) matrix[i] = new int[n];
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++)
			matrix[i][j] = 0;
	}
	
	for(int i=0;i<n;i++){
		cin>>vertex[i][0];
		cin>>deg;
		for(int j=1;j<=deg;j++){
			cin>>vertex[i][j];
			matrix[vertex[i][0]-1][vertex[i][j]-1] = 1;
		}
	}

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

	for(int i=0;i<n;i++) delete [] vertex[i]; delete [] vertex;
	for(int i=0;i<n;i++) delete [] matrix[i]; delete [] matrix;
}

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

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

  vector<int> c(n);
  vector<vector<int>> M(n, vector<int>(n));
  for (int i = 0; i < n; i++) {
    int node;
    int d;
    cin >> node >> d;
    node--;

    for (int j = 0; j < d; j++) {
      int tmp;
      cin >> tmp;
      tmp--;
      M[i][tmp] = 1;
    }
  }

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

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

int n;
int M[101][101];
int main() {
    cin >> n;

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

    for (int l = 1; l <= n; ++l) {
        for (int i = 1; i <= n; ++i) {
            if (i)
            cout << M[l][i] << " ";
        }
        if (l != n)
        cout << endl;
    }

    return 0;
}

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

int g[100][100];

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, u, k, v;
    int i, j;
    cin>>n;
    for(i=0; i<n; i++) {
        cin>>u>>k;
        for(j=0; j<k; j++) {
            cin>>v;
            g[u-1][v-1]=1;
        }
    }
    for(i=0; i<n; i++) {
        cout<<g[i][0];
        for(j=1; j<n; j++) {
            cout<<' '<<g[i][j];
        }
        cout<<'\n';
    }
    return 0;
}

C++: #include <iostream>

using namespace std;

int main(){
  int n; cin >> n;
  //adjacent matrix expression
  int a[n+1][n+1];
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
      a[i][j]=0;
    }
  }
  for(int i=0;i<n;i++){
    int u; cin >> u;
    int k; cin >> k;
    for(int i=0;i<k;i++){
      int v; cin >> v;
      a[u][v]=1;
    }
  }
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n-1;j++){
      cout << a[i][j] << " ";
    }
    cout << a[i][n] << endl;
  }
}