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 <cstring>
using namespace std;
int main(){
	int n;	cin>>n;
	int data[101][101];
	memset(data,0,sizeof(data));
	int id,num,rout;
	for(int i=0;i<n;i++){
		cin>>id>>num;
		id--;
		for(int j=0;j<num;j++){
			cin>>rout;
			data[id][rout-1]=1;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(j)	cout<<" ";
			cout<<data[i][j];
		}
		cout<<endl;
	}
	return 0;
}

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


int N;

int main(){
	cin >> N;
	int M[100][100]={0};
	int t,a,k;
	for(int i=0;i<N;i++){
		cin >> t >> k;
		t--;
		for(int j=0;j<k;j++){
			cin >> a;
			a--;
			M[t][a] = 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++: #define _USE_MATH_DEFINES
#include "bits/stdc++.h"
using namespace std;

//#define int long long
#define DBG 1
#define dump(o) if(DBG){cerr<<#o<<" "<<o<<endl;}
#define dumpc(o) if(DBG){cerr<<#o; for(auto &e:(o))cerr<<" "<<e;cerr<<endl;}
#define rep(i,a,b) for(int i=(a);i<(b);i++)
#define rrep(i,a,b) for(int i=(b)-1;i>=(a);i--)
#define each(it,c) for(auto it=(c).begin();it!=(c).end();it++)
#define all(c) c.begin(),c.end()
const int INF = sizeof(int) == sizeof(long long) ? 0x3f3f3f3f3f3f3f3fLL : 0x3f3f3f3f;
const int MOD = (int)(1e9 + 7);

signed main() {
	int n; cin >> n; vector<vector<int> >vec(n, vector<int>(n, 0));
	rep(i, 0, n) {
		int u, k; cin >> u >> k;
		u--;
		rep(j, 0, k) {
			int v; cin >> v; v--;
			vec[u][v] = 1;
		}
	}
	rep(i, 0, n) {
		rep(j, 0, n)cout << vec[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++: You are not allowed to see this code

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

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

#define pb push_back
#define rep(i, n) for(int i = 0; i < (n); i++)
#define FOR(i, a, n) for(int i = a; i < (n); i++)
#define mod (ll)(1e9+7)
#define int ll

__attribute__((constructor))
void initial() {
  cin.tie(0);
  ios::sync_with_stdio(false);
}

signed main() {
	ll n, a[101][101] = {0}, u, k, v;
  cin >> n;
  rep(i, n) {
    cin >> u >> k;
    u--;
    rep(j, k) {
      cin >> v;
      v--;
      a[u][v] = 1;
    }
  }

  rep(i, n) {
    rep(j, n) {
      if (j) cout << " ";
      cout << a[i][j];
    }
    cout << endl;
  }
  return 0;
}

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


int main(){
	int n,a,b,c;
	cin >> n;

	int table[n][n];
	//??£??\??????????¢????

	for(int i=0; i<n; i++){
		for(int j=0; j<n; j++){
			table[i][j] = 0;
		}
	}
	//??£??\??????????????????


	for(int i=0; i<n; i++){
		cin >> a >> b;
		if(b != 0){
			for(int j=0; j<b; j++){
				cin >> c;
				table[a-1][c-1] = 1;
			}
		}
	}

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

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

int main(){
	std::vector< std::vector<int> > M;
	int n, r, k, c;
	scanf("%d", &n);
	M.resize(n);
	for (int i=0;i<n;i++){
		M[i].resize(n);
		scanf("%d %d", &r, &k);
		for (int j=0; j<k;j++){
			scanf("%d", &c);
			M[i][c-1]=1;
		}
	}
	for (int i=0;i<n;i++){
		for (int j=0;j<n;j++){
			printf("%d", M[i][j]);
                        if (i!=n-1) printf(" ");
		}
		printf("\n");
	}
	return 0;
}

C++: #include <iostream>
using namespace std;
int main() {

  int n,p,q;
  cin>>n;
  int a[100][100]={};
  for (int i=0;i<n;i++){
    cin>>q>>p;
    if (p!=0){
      for (int j=0;j<p;j++){
	a[i][j]=1;
      }
    }
  }
  for (int i=0;i<n;i++){
    for (int j=0;j<n;j++){
      cout<<a[i][j]<<" ";
    }
    cout<<endl;
  }
  return 0;
}

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

int main(){
    int n;
    cin >> n;
    vector<vector<int> > A(n, vector<int>(n, 0));
    for(int i=0; i<n; ++i){
        int k;
        // 1~n???index?????¨????????????????????????????????????1????????????0~n-1????????????
        cin >> k-1;
        int u;
        cin >> u;
        for(int j=0; j<u; ++j){
            int v;
            cin >> v-1;
            A[k][v] = 1;
        }
    }
    
    for(int i=0; i<n; ++i){
        for(int j=0; j<n; ++j){
            cout << A[i][j];
            if(j != n-1)
            cout << " ";
        }
        cout << endl;
    }
}

C++: #include <stdio.h>

int map_max;
int map[110][110];
int rows;
int cols[110];
int mat[110][110];

void get_map();
void print_map();
void conv_map();
void print_mat();

int main()
{

  get_map();
  //print_map();
  conv_map();
  print_mat();
  return 0;
}

void get_map()
{

  int k;
  scanf("%d", &map_max);//<100

  for(int i=0;i<map_max;i++)
    {
      scanf("%d", &k);
      scanf("%d", &cols[i]);
      for(int j=0;j<cols[i];j++)
	{
	  map[i][j]=0;
	  scanf("%d", &map[i][j]);
	}
    }

  
  return ;
}

void print_map()
{
  for(int i=0;i<map_max;i++)
    {
      for(int j=0;j<cols[i];j++)
	{
	  printf("%d", map[i][j]);
	}
      puts("");
    }
return ;
}


void conv_map()
{
  for(int i=0;i<map_max;i++)
    {
      for(int j=0;j<cols[i];j++)
	{
	  if(map[i][j]!=0)
	    {
	  mat[i][map[i][j]-1]=1;
	    }
	}
    }
  return ;
}

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

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

int n;
vector<vector<int> > g;
int ans[101][101];

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

C++: #include <iostream>
using namespace std;
int main(){
  int n,u[100],k[100]={},v[100][100];
  cin >> n;
  for(int i=0; i<n; i++){
    cin >> u[i];
    int x;
    cin >> x;
    k[u[i]-1]+=x;

    for(int j=0; j<k[i]; j++)
      cin >> v[i][j];
  }

  for(int i=0; i<n; i++){
    int count=0;
    for(int j=0; j<4; j++){
      if(v[i][count]==j+1){
        cout << 1;
        count++;
      }

      else
        cout << 0;

      cout << " ";
      }

      cout << endl;
    }
  }

C++: #include <iostream>
#include <vector>
using namespace std;
vector<vector<int> > v(101);
int dp[101][2] = { 0 };
int n, t = 0;
 
void dfs(int a) {
    if (dp[a][0] == 0) { t++; dp[a][0] = t; }
    else { return; }
    for (int i = 0;i < v[a].size();i++) {
        if (dp[v[a][i]][0] == 0) {
            dfs(v[a][i]);
        }
    }
    if (dp[a][1] == 0) { t++; dp[a][1] = t; }
}
 
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 x; cin >> x;
            v[u].push_back(x);
        }
    }
    for (int i = 1; i <= n;i++) {
        dfs(i);
    }
    for (int i = 1; i <= n;i++) {
        cout << i << ' ' << dp[i][0] << ' ' << dp[i][1] << endl;
    }
}