Go: package main

import "fmt"

func main() {
	var N int
	fmt.Scan(&N)
	graph := make([][]int, N)
	for i := range graph {
		graph[i] = make([]int, N)
		var u, k int
		fmt.Scan(&u, &k)
		for j := 0; j < k; j++ {
			var v int
			fmt.Scan(&v)
			v--
			graph[i][v] = 1
		}
	}
	for i := 0; i < N; i++ {
		for j := 0; j < N; j++ {
			if j > 0 {
				fmt.Print(" ")
			}
			fmt.Print(graph[i][j])
		}
		fmt.Println()
	}
}

C++: #include <iostream>
#include <algorithm> // next_permutation
#include <iomanip>
#include <cmath>
#include <vector>
#include <sstream>
#include <string>
#include <cstdio>
#include <stack>
#include <queue>
#include <list>
#include <numeric> //accumulate
//#include <unordered_map> //???????????\??¢??°
#include <fstream> //ifstream, ofstream

//#define NDEBUG //NDEBUG???#include <cassert>???????????????????????????????????´???assert?????????????????????????????????NDEBUG?????????????????????????????????????????????
#include <cassert> //assert


using namespace std;

//???????????°??????TEST????????????????????¬???????????????????????????????????¢????????????
#define TEST //*******************************************************************************************************************************************
//?????????????????¨??§?????\????????????????????????????????°?????????????¨???????????????????dout???????????????????????§???????????¬??????????????????????????????????????????
//??????????????????????????????????????????????????????????§?CPU???????£??????????????????§???TLE?????????????????????????????????????????§????????¨???                           ????????????????????????cerr????????£????????????????????????????????????
#ifdef TEST
#define dout cout
#define din cin
#else
stringstream dummy; //???????????°??????dout?????????????????????????????????
#define dout dummy.str(""); dummy.clear(stringstream::goodbit); dummy //dummy?????????????????????????????????????????¨?????¢?????¢???????????????
//???????????¨??????????????????goodbit?????????????????????????????¨???????????´????????????????????????????????¨?????°?????????????????§???????????????????????????????????? http://d.hatena.ne.jp/linden/20060427/p1
#endif

//?¨??????????????????????????????????????????????????????´??????OUTPUTFILE????????????????????¬???????????????????????????????????¢????????????
//#define OUTPUTFILE "output.txt" //*******************************************************************************************************************************************
#ifdef OUTPUTFILE
#define dout outputfile //??¨????????????TLE????????§?????????dout?????¨??¨??????????????¢????????????????????????????????????????????§????¨????????????´??????????????£??????????????????????¨?????????????????????????????????????????????§?????????????????????
ofstream outputfile(OUTPUTFILE);
#define OutputFilePath "/Users/Nag/Documents/Prgm/Test/DerivedData/Test/Build/Products/Debug/output.txt"
#endif

//?¨??????\???????????????????????????????????????????????´??????INPUTFROMTEXTFILE????????????????????¬???????????????????????????????????¢????????????
//#define INPUTFILE "input.txt" //*******************************************************************************************************************************************
#ifdef INPUTFILE
#define din inputfile
ifstream inputfile(INPUTFILE);
#endif


#define disp(A) dout << #A << " = " << (A) << endl
#define disP(A) dout << setw(3) << (A) << " " // << setw(3) ??????????????\????????????
#define rep(i,a,n) for(int (i)=(a); (i)<(n); (i)++)
#define dispAll(A,n) dout << #A << " = "; rep(j, 0, (n)) {disP(A[j]);} dout << endl

typedef pair<int,int> pii;
typedef vector<int> vi;
typedef unsigned long long ll;


const int INF = 999;//1e9-1;







int main() {
    int n; din>>n;
    
    int s, g, numOfAdjacent;
    int adjacent[101];
    
    bool adjacencyMatrix[101][101] = {0};
    
    rep(i,0,n) {
        din>>s>>numOfAdjacent;
        
        rep(j,0,numOfAdjacent) {
            din>>g;
            adjacencyMatrix[s][g]=1;
        }
    }
    
    //output
    rep(i,1,n+1) {
        rep(j,1,n+1) {
            dout<<(j==1?"":" ")<<adjacencyMatrix[i][j];
        }
        dout<<endl;
    }
    
    
    
#ifdef INPUTFILE
    inputfile.close();
#endif
    
#ifdef OUTPUTFILE
    outputfile.close();
    cout << "\"" << OutputFilePath << "\"" << endl;
#endif
    
    return 0;
}

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

#define rep(i,n) for(int i = 0; i < n; i++)
#define Rep(i,n) for(int i = 1; i <= n; i++)
#define sz(x) int(x.size())
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define YesorNo(a) printf(a ? "Yes\n" : "No\n")
#define endl '\n'
#define fi first
#define se second
using ll = long long;
using P = pair<int,int>;
using Pl = pair<ll,ll>;
template<class T> using V = vector<T>;
const int dx[] = {0,1,0,-1,1,1,-1,-1};
const int dy[] = {1,0,-1,0,1,-1,-1,1};
const int inf = (1<<30)-1;
const ll infll = (1LL<<62)-1;
ll ceil(const ll &a, const ll &b){return ((a)+(b)-1)/b;}
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }



int main(){
    int n;
    cin >> n;
    V<V<int>> g(n,V<int>(n));
    rep(i,n) {
        int u, k;
        cin >> u >> k;
        u--;
        rep(j,k) {
            int a;
            cin >> a;
            a--;
            g[u][a]++;
        }
    }
    rep(i,n)rep(j,n) cout << g[i][j] << (j==n-1 ? '\n' : ' ');
}

C++: #include <iostream>
using namespace std;
int a[101][101];

int main()
{
	int n;
	cin >> n;
	for (int i = 1; i <= n; i++) {
		int u, k, v;
		cin >> u >> k;
		while (k--) {
			cin >> v;
			a[i][v] = 1;

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


	return 0;
}

C++: #include <stdio.h>
int main(){
    int n;
    int node,k,a;
    scanf("%d",&n);
    int mat[n][n];
    for (int i = 0; i < n; i++)
    {
        /* code */
        for(int j=0;j<n;j++){
            mat[i][j] = 0;
        }
    }
    
    for(int i=0;i<n;i++){
        scanf("%d %d",&node,&k);
        for(int j=0;j<k;j++){
            scanf("%d",&a);
            mat[node-1][a-1] = 1;
        }
    }
    for (int i = 0; i < n; i++)
    {
        /* code */
        for(int j = 0; j < n; j++){
            printf("%d",mat[i][j]);
            if (j != n-1)
            {
                /* code */
                printf(" ");
            }
            
        }
        printf("\n");
    }
    
    
    


    
}

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

//??£??\?????????????¬??????????????¨???¶???	array[i][j] i??????j???????????????
//??£??\?????????????????????????????????????????????,?????????????¨???¶
//ALDS1_11-A
int n,u,k,a;
int map[101][101];
int main(){
	for(int i=0;i<101;i++){
		for(int j=0;j<101;j++){
			map[i][j]=0;
		}
	}
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>u;
		cin>>k;
		for(int j=0;j<k;j++){
			cin>>a;
			map[u][a]=1;
		}
	}
	for(int i=1;i<n+1;i++){
		for(int j=1;j<n+1;j++){
			cout<<map[i][j]<<" ";
			if(j==n&&j!=n)cout<<endl;
		}
	}
	return 0;
}

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

using namespace std;

void solve()
{
	int n;
	cin >> n;
	vector<vector<int> > G(n, vector<int>(n));
	for (int i = 0; i < n; ++i)
	{
	    int u,k;
		cin >> u >> k;
		for (int j = 0; j < k; ++j)
		{
			int v;
			cin >> v;
			G[u - 1][v - 1] = 1;
		}
	}
	for (int i = 0; i < n; ++i)
	{
		for (int j = 0; j < n - 1; ++j)
		{
			cout << G[i][j] << " ";
		}
		cout << G[i][n-1] << endl;
	}
}

int main()
{
	solve();
	return(0);
}