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 <iostream>

using namespace std;

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

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

  for (int i = 1; i <= n; i++) {
    cout << G[i][1];
    for (int j = 2; j <= n; j++) {
      cout << " " << G[i][j];
    }
    cout << endl;
  }

  return 0;
}

C++: #include<stdio.h>

int dp[50];

int fib(int n){
  if(n==0||n==1) return dp[n]=1;
  if(dp[n]!=-1) return dp[n];
  return dp[n]=fib(n-1)+fib(n-2);
}

int main(){
  int n,i;
  for(i=0;i<50;i++) dp[i]=-1;

  scanf("%d",&n);
  printf("%d\n",fib(n));

  return 0;
}

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

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

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

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

  return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll MOD = 1e9 + 7;
const int inf = 1e9;
const ll INF = 1e18;
const double pi = 3.14159265358979323846;
#define rep(i, n) for (int i = 0; i < n; i++)
using Graph = vector<vector<int>>;
using pint = pair<int, int>;
int dx[4] = { 1, 0, -1, 0 }, dy[4] = { 0, 1, 0, -1 };

int main() {
    int n;
    cin >> n;
    int ans[n][n];
    rep (i, n) rep (j, n) ans[i][j] = 0;
    rep (i, n) {
        int a, k;
        cin >> a >> k;
        rep (j, k) {
            int b;
            cin >> b;
            ans[a - 1][b - 1] = 1;
        }
    }
    rep (i, n) {
        rep (j, n) {
            if (j != 0) cout << " ";
            cout << ans[i][j];
        }
        cout << "\n";
    }
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  const int INF = 1e7;  //とても大きい値を無限としておく。
int u,k;
cin >> u>> k;  //Vは与えられた頂点数,Eは辺の数
vector<vector<int>> a(u,vector<int>(u,INF));//V*Vを無限で初期化
for(int i=0;i<k;++i){
    //s→tへの有向辺として入力が与えられたとする。//wは重み
    int s,t;       //,w
    cin >> s >> t; //>>w
    a[s][t] = 1;   //a[s][t] = w;
    //a[t][s] = 1; (s-tの無向辺の場合)
}
  
    
}

C++: #include<iostream>
using namespace std;
int N,n,u,k,v;
int main()
{
    cin>>N;
    int A[N][N];
    for(int p=0;p<N;p++)
        for(int q=0;q<N;q++)
            A[p][q]=0;
    for(n=0;n<N;n++)
    {
        cin>>u>>k;
        for(int i=0;i<k;i++)
        {
            cin>>v;
            A[u-1][v-1]=1;
        }
    }
    for(int p=0;p<N;p++)
    {
        for(int q=0;q<N-1;q++)
        {
            cout<<A[p][q]<<' ';
        }
        cout<<A[p][N-1]<<endl;
    }
    return 0;
}

C++: #include <cstdio>

#define N 100
int main(){
    int a[N+1][N+1] = {};

    int n;
    std::scanf("%d", &n);

    for(int i = 1; i <= n; ++i){
        int id;
        std::scanf("%d", &id);
        int m;
        std::scanf("%d", &m);
        for(int j = 1; j <= m; ++j){
            int x;
            std::scanf("%d", &x);
            a[id][x] = 1;
        }
    }
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= n; ++j){
            std::printf("%d", a[i][j]);
            if(j != n) std::printf(" ");
            else std::printf("\n");
        }
    }

    return 0;
}

C++: #include<iostream>
#include<iomanip>
#include<algorithm>
#include<bitset>
#include<cctype>
#include<cmath>
#include<cstdio>
#include<cstring>
#include<deque>
#include<functional>
#include<limits>
#include<list>
#include<map>
#include<set>
#include<stack>
#include<string>
#include<sstream>
#include<queue>
#include<vector>
using namespace std;

#define MOD 1000000007
#define INF 0x3f3f3f3f
#define INFL 0x3f3f3f3f3f3f3f3fLL

int main() {
	bool M[101][101] = {};
	int n; 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;
			M[u][v] = true;
		}
	}

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

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

#define MAX 100

using namespace std;

int adjacencyList[MAX + 1][MAX + 1];

int main(void)
{

	int n;
	int u;
	int k;
	int v;

	cin >> n;

	for (int i = 0; i < n; i++) {
		cin >> u >> k;

		for (int j = 0; j < k; j++) {
			cin >> v;
			adjacencyList[u][v] = 1;
		}

	}

	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			if (j > 1) {
				putchar(' ');
			}
			
			printf("%d",adjacencyList[i][j]);
		}

		putchar('\n');

	}


	return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int m[101][101];
int main(){
  int n,u,k,v;
  scanf("%d",&n);
  for(int i=0;i<n;i++){
    scanf("%d %d",&u,&k);
    u--; //
    for(int j=0;j<k;j++){
      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<bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (n); ++i)

using namespace std;
using ll = long long;
using v1 = vector<int>;
using vl = vector<long long>;
using v2 = vector<vector<int>>;
using v3 = vector<vector<char>>;

int main(){
	int n;
	cin >> n;
	v2 a(n, v1(n, 0));
	rep(i, n){
		int x, y, z;
		cin >> x;
		cin >> y;
		rep(j, y){
			cin >> z;
			a[x-1][z-1]++;
		}
	}
	rep(i, n){
		rep(j, n){
			cout << a[i][j];
			if(j != n-1) cout << " ";
			else cout << endl;
		}
	}
}