Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 500001), 500000)
	return scanner
}

func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}

func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}

func main() {
	fp := os.Stdin
	if len(os.Args) > 1 {
		fp, _ = os.Open(os.Args[1])
	}

	scanner := getScanner(fp)
	writer := bufio.NewWriter(os.Stdout)

	n := getNextInt(scanner)
	g := make([][]int, n)

	for i := 0; i < n; i++ {
		g[i] = make([]int, n)
	}

	for i := 0; i < n; i++ {
		u := getNextInt(scanner)
		k := getNextInt(scanner)
		u--
		for ii := 0; ii < k; ii++ {
			v := getNextInt(scanner)
			v--
			g[u][v] = 1
		}
		fmt.Fprintln(writer, joinint(g[u], " "))
	}

	writer.Flush()
}

func joinint(a []int, sep string) string {
	n := len(a)
	ss := make([]string, n)
	for i := 0; i < n; i++ {
		ss[i] = fmt.Sprintf("%d", a[i])
	}
	return strings.Join(ss, sep)
}

C++: #include<stdio.h>
#define N 100

int main(){
    int i,j,n,k,u,v,M[N+1][N+1];

    scanf("%d",&n);

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

    for(i=0;i<n;i++){
        scanf("%d%d",&u,&k);
        for(j=0;j<k;j++){
            scanf("%d",&v);
            M[u-1][v-1]=1;
        }
    }
    for(i=0;i<n;i++){
        for(j=0;j<n;j++){
            if(j!=0) printf(" ");
            printf("%d",M[i][j]);
        }
        puts("");
    }
    return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <stack>
#include <string>
#include <queue>
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <vector>
#include <list>
#include <string.h>
#define _USE_MATH_DEFINES
#include <math.h>
#include <map>
#define INFTY (1<<30)
#define MAX 100000000

using namespace std;

int main() {
	int n, m[101][101] = {};
	cin >> n;
	for( int i = 1; i <= n; i++) {
		int u, k;
		cin >> u >> k;
		for( int j = 1; j <= k; j++) {
			int v;
			cin >> v;
			m[i][v] = 1;
		}
	}
	for( int i = 1; i <= n; i++) {
		for( int j = 1; j <= n; j++) {
			if( j < n) cout << m[i][j] << ' ';
			else cout << m[i][j];
		}
		cout << endl;
	}

    return 0;
}

C++: #include <stdio.h>

int main(){
  int n,u,adj[110][110],k,v[100],i,j;
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%d%d",&u,&k);
    for(j=0;j<k;j++){
      scanf("%d",&v[j]);
      adj[u-1][v[j]-1]=1;
    }
  }

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


  return 0;

}

C++: //Aizu11A 16D8104015E Nobushige Sen 18.6.22

#include<iostream>
using namespace std;
 
int x[15000][15000],n,q,r,b;
 
int main() {
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> q >> r;
        for (int j = 0; j < r; j++) {
            cin >> b;
            x[i][b] = true;
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 0; j < n; j++) {
            if (j) { cout << ' '; }
            cout << x[i][j+1];
        }
        cout << endl;
    }
    return 0;
}

C++: #include <bits/stdc++.h>
#define rep(i,n) for (int i = (0); i < (n); ++i)
#define rrep(i,n) for(int i = 1; i <= (n); ++i)
#define drep(i,n) for(int i = (n)-1; i >= 0; --i)
#define srep(i,s,t) for (int i = s; i < t; ++i)
#define rng(x) (x).begin(),(x).end()
#define rrng(x) (x).rbegin(),(x).rend()
#define limit(x,l,r) max(l,min(x,r))
#define lims(x,l,r) (x = max(l,min(x,r)))
#define isin(x,l,r) ((l) <= (x) && (x) < (r))
#define show(x) cout << #x << " = " << (x) << endl
#define show2(x,y) cout << #x << " = " << (x) << ", " << #y << " = " << (y) << endl
#define show3(x,y,z) cout << #x << " = " << (x) << ", " << #y << " = " << (y) <<  ", " << #z << " = " << (z) << endl
#define showv(v) rep(i,v.size()) printf("%d%c", v[i], i==v.size()-1?'\n':' ')
#define showv2(v) rep(j,v.size()) showv(v[j])
#define showt(t,n) rep(i,n) printf("%d%c", t[i], i==n-1?'\n':' ')
#define showt2(t,r,c) rep(j,r) showt(t[j],c)
#define showvp(p) rep(i,p.size()) printf("%d %d\n", p[i].first, p[i].second);
#define printv(v) rep(i,v.size()) printf("%d\n", v[i])
#define printt(t,n) rep(i,n) printf("%d\n", t[i])
#define incl(v,x) find(rng(v),x)!=v.end()
#define incls(s,c) s.find(c)!=string::npos
#define fi first
#define se second
#define pb push_back
#define eb emplace_back
#define sz(x) (int)(x).size()
#define pcnt __builtin_popcountll
#define bit(n,k) ((n>>k)&1) // nのk bit目
#define bn(x) ((1<<x)-1)
#define dup(x,y) (((x)+(y)-1)/(y))
#define newline puts("")
#define uni(x) x.erase(unique(rng(x)),x.end())
#define SP << " " <<
#define v(T) vector<T>
#define vv(T) v(v(T))
using namespace std;
using ll = long long;
using ld = long double;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vs = vector<string>;
using P = pair<int, int>;
using T = tuple<int, int, int>;
using vp = vector<P>;
using vt = vector<T>;
const int mod = 1000000007;
const double EPS = 1e-9;
//const long double EPS = 1e-14;
const int INF = (1<<30)-1;
const ll LINF = (1LL<<62)-1;
#define dame { puts("No"); return 0;}
#define yn {puts("Yes");}else{puts("No");}
inline int in() { int x; scanf("%d",&x); return x;}
inline ll lin() { ll x; scanf("%lld",&x); return x;}
inline char chin() { char x; scanf("%c",&x); return x;}
inline string stin() { string x; cin >> x; return x;}
inline double din() { double x; scanf("%lf",&x); return x;}
//template<class T = int> inline T in() { T x; cin >> x; return (x);}
template<typename T>inline ll suma(const v(T)& a) { ll res(0); for (auto&& x : a) res += x; return res;}
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
char itoa(int n) { return n + '0';}
ll gcd(ll a, ll b) { return b ? gcd(b,a%b) : a;}
ll lcm(ll a, ll b) { return a/gcd(a,b)*b;}

int main () {
  int n = in();
  vvi a(n,vi(n));
  rep(i,n) {
    int u, k;
    cin >> u >> k;
    u--;
    rep(j,k) {
      int v;
      cin >> v;
      v--;
      a[u][v] = 1;
    }
  }
  rep(i,n)rep(j,n) printf("%d%c", a[i][j], j == n-1 ? '\n' : ' ');
  return 0;
}

C++: #include <stdio.h>
#include <stdlib.h>
#pragma warning (disable:4996)

int main()
{
	int num = 0;
	while (scanf("%d",&num)!=EOF)
	{
		int arr[102][102] = { 0 }, ans[102][102] = { 0 };
		for (int i = 0; i < num; i++)
		{
			scanf("%d %d", &arr[i][0], &arr[i][1]);
			int temp = 2;
			for (int j = 0; j < arr[i][1]; j++)
			{
				scanf("%d", &arr[i][temp]);
				temp++;
			}
		}
		for (int i = 0; i < num; i++)
		{
			int temp = 2;
			for (int j = 0; j < arr[i][1]; j++)
			{
				ans[i][arr[i][temp] - 1]++;
				temp++;
			}
			printf("%d", ans[i][0]);
			for (int j = 1; j < num; j++)
			{
				printf(" %d", ans[i][j]);
			}
			printf("\n");
		}
	}
	return 0;
}