Go: package main
import (
	"fmt"
	"bufio"
	"os"
	"bytes"
	"strconv"
	"strings"
)

func nextInt(scanner *bufio.Scanner) int {
	scanner.Scan()
	num , _ :=  strconv.Atoi(scanner.Text())
	return num
}


func main() {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Split(bufio.ScanWords)

	N := nextInt(scanner)
	var A [][]int = make([][]int, N)
	for i:=0; i<N; i++ {
		A[i] = make([]int, N)
	}
	for i:=0; i<N; i++{
		idx := nextInt(scanner)
		cnt := nextInt(scanner)
		for j:=0; j<cnt; j++ {
			node := nextInt(scanner)
			A[idx-1][node-1] = 1
		}
	}
	var outBuffer bytes.Buffer
	for i:=0; i<N; i++ {
		outBuffer.WriteString(strings.TrimRight(fmt.Sprintf("%v",A[i])[1:], "]") + "\n")
	}
	fmt.Printf("%s", outBuffer.String())
}

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

int main() {
    ll n;
    cin >> n;
    vector<vector<ll>> mat(n,vector<ll>(n,0));
    for(ll i=0;i<n;i++) {
        ll u,k;
        cin>>u>>k;
        for(ll j=0;j<k;j++) {
            ll tmp;
            cin>>tmp;
            mat[u-1][tmp-1] = 1;
        }
    }
    for(ll i=0;i<n;i++) {
        for(ll j=0;j<n;j++) {
            if(j<n)cout << mat[i][j] << " ";
            else cout << mat[i][j];
        }
        cout << endl;
    }
}

C++: #include<iostream>
using namespace std;
static const int N=100;

int main(){
    int M[N][N];
    int n,u,v,k;
    
    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++: #include<stdio.h>

int main(){

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

    int A[100][100];
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            A[i][j] = 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;
        scanf("%d", &v);
        v--;
        A[u][v] = 1;    //uとvに辺を張る
        }
    }

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

    return 0;
}

C++: #include <iostream>
#include <string>
#include <vector>
#include <set>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <functional>
#include <map>
#include <cmath>
#include <queue>

using namespace std;

int main() {


    int n;scanf("%d",&n);
    int u;
    int k;
    vector<vector<int> > graph;
    graph.resize(n);
    for(int i=0;i<n;i++){
        graph[i].resize(n);
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            graph[i][j]=0;
        }
    }

    for(int i=0;i<n;i++){
        scanf("%d",&u);
        scanf("%d",&k);
        int value;
        for(int j=0;j<k;j++){
            scanf("%d",&value);
            graph[u-1][value-1]=1;
        }
    }

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

    }

    return 0;
}

C++: #include<iostream>
#define SIZE 100

using namespace std;

int main(void) {

	int n, c, v;
	int G[SIZE][SIZE];
	int A[SIZE][SIZE];

	cin >> n;

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

	for (int i = 0; i < n; i++) {
		cin >> v;
		cin >> c;
		for (int j = 0; j < c; j++) {
			cin >> G[i][j];
			int tmp = G[i][j];
			if (tmp > 0) {
				A[i][tmp - 1] = 1;
			}
		}
	}

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

	system("pause");

}

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

int main(void){
	int n1, n2, tmp, row;
	cin>>n1;
	vector < vector <int> > M(n1, vector <int>(n1));

	for (int j=0; j<n1; j++){
		cin>>row;
		cin>>n2;
		for (int i=0; i<n2; i++){
			cin>>tmp;
			M[row-1][tmp-1] = 1;
		}
	}

	for (int i=0; i<n1; i++){
		for (int j=0; j<n1; j++){
			if (j == n1-1)
				cout<<M[i][j]<<endl;
			else
				cout<<M[i][j]<<" ";
		}
	}
	return 0;
}

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

int a[101][101] = {0}; //???????????????u??¨u?????£??\?????????????????????v

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

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

  for(int i = 1; i <= n; i++) {
    for(int j = 1; j <= n; j++) {
      if(a[i][j] == 1) cout << '1';
	else cout << '0';

      cout << ' ';
    }
    cout <<  endl;
  }
}

C++: #include<stdio.h>
#include<stdlib.h>
#include<string.h>
#pragma warning(disable:4996)
int main(){
	int n = 0;
	int arr[105][105] = { 0 };
	scanf("%d", &n);
	for (int m = 0; m < n; m++){
		int a = 0;
		int b = 0;
		scanf("%d %d", &a, &b);
		for (int x = 0; x < b; x++){
			int c = 0;
			scanf("%d", &c);
			getchar();
			arr[a - 1][c - 1] = 1;
		}
	}
	for (int m = 0; m < n; m++){
		for (int o = 0; o < n-1; o++){
			printf("%d ", arr[m][o]);
		}
		printf("%d", arr[m][n-1]);
		printf("\n");
	}
	return 0;
}

C++: # include <iostream>
# include <algorithm>
# include <vector>
# include <string>
# include <set>
# include <map>
# include <cmath>
# include <iomanip>
# include <functional>
# include <utility>
# include <stack>
# include <queue>
# include <list>
# include <ctime>
constexpr int MOD = 1000000007;
constexpr int INF = 2000000000;
using namespace std;

int ans[101][101] = {0};
int main() {
	int n;
	cin >> n;
	int a;
	int b;
	int c;
	for (int i = 1; i <= n; i++) {
		cin >> a >> b;
		for (int j = 0; j < b; j++) {
			cin >> c;
			ans[i][c] = 1;
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= n; j++) {
			cout << ans[i][j];
			if (j != n)cout << " ";
			else cout << endl;
		}
	}
}

C++: /* 
 * ALDS1_11.cpp
 * ??£??\???????????¨?????§???????????????????????°??????G?????£??\????????¨?????????????????????????????????
 */
#include <iostream>
#include <vector>
#include <cstdio>
#include <cstdlib>
#include <cstring>

using namespace std;

using Adjacents = vector<int>;
using Vertexes = vector<Adjacents>;

int main(void) {

    int N;
    scanf("%d", &N);

    Vertexes vs;
    vs.resize(N);
    for (int i = 0, id, num; i < N; ++i) {
        scanf("%d %d", &id, &num);
        for (int j = 0, vert; j < num; ++j) {
            scanf("%d", &vert);
            vs[id-1].push_back(vert);
        }
    }

    int **matrix = new int*[N];
    for (int i = 0; i < N; ++i) {
        matrix[i] = new int[N];
        memset(matrix[i], 0, sizeof(int)*N);
        for (int j = 0; j < vs[i].size(); ++j) {
            matrix[i][vs[i][j] - 1] = 1;
        }
    }

    for (int i = 0; i < N; ++i) {
        for (int j = 0; j < N; ++j) {
            //printf("%2d", matrix[i][j]);
            putchar(matrix[i][j]);
            if (j != N - 1)
                putchar('\n');
        }
        delete[] matrix[i];
        printf("\n");
    }
    delete[] matrix;

    return 0;
}