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 i,j,u,k,v,n,d[101][101]={0};
  cin >> n;
  for(i = 0; i < n; i++){
    cin >> u >> k;
    for(j = 0; j < k; j++){
      cin >> v;
      d[u][v]=1;
    }
  }
  for(i = 1; i <= n; i++){
    for(j = 1; j <= n; j++){
      if(j==n){
      cout << d[i][j];
      }else{
      cout << d[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;
    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++)
    {
        int j,num;
        cin>>j>>num;
        for(int a=0;a<num;a++)
        {
            int k;
            cin>>k;
            M[j-1][k-1]=1;
        }
    }
    //print
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            cout<<M[i][j];
            if(j==n-1) cout<<endl;
            else cout<<" ";
        }
    }

}

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] >> k[i];

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

      else
        cout << 0;

      if(j!=n)
        cout << " ";
      }

      cout << endl;
    }
  }

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

using Graph = std::vector<std::vector<uint32_t>>;

int main() {
  uint32_t n = 0;
  std::cin >> n;
  Graph G(n + 1);
  for (size_t i = 1; i <= n; i++) {
    uint32_t k = 0;
    std::cin >> i >> k;
    if (k > 0) G[i] = std::vector<uint32_t>(k);
    for (size_t j = 0; j < k; j++) std::cin >> G[i][j];
  }

  Graph mat(n + 1, std::vector<uint32_t>(n + 1, 0));
  for (size_t i = 1; i < G.size(); i++) {
    for (size_t j = 0; j < G[i].size(); j++) mat[i][G[i][j]] = 1;
  }

  for (size_t i = 1; i < mat.size(); i++) {
    for (size_t j = 1; j < mat[i].size(); j++) {
      std::cout << mat[i][j] << (j + 1 == mat[i].size() ? "" : " ");
    }
    std::cout << std::endl;
  }

  return 0;
}

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

int main(){
  int n, u, k, v, a[100][100] = {0};
  cin >> n;
  for(int i=0;i<n;i++){
    cin >> u;
    cin >> 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(j-1) cout << " ";
      cout << a[i][j];
    }
    cout << endl;
  }
  return 0;
}

C++: #include<stdio.h>
int main(){
int i,j,n,s,t,u,g[100][100];
scanf("%d",&n);
for(i=0;i<n;i++){
  for(j=0;j<n;j++){
  g[i][j]=0;
}
}
for(i=0;i<n;i++){
  scanf("%d%d",&s,&t);
  for(j=0;j<t;j++){
    scanf("%d",&u);
    g[s-1][u-1]=1;
  }
}
  for(i=0;i<n;i++){
    for(j=0;j<n;j++){
      if(j!=0)printf(" ");
    printf("%d",g[i][j]);
  }
  printf("\n");
}
}

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

int main(){
  int n;
  cin >> n;
  int mat[n + 1][n + 1];

  for(auto i = 0; i < n + 1; i++){
    for(auto j = 0; j < n + 1; j++){
      mat[i][j] = 0;
    }
  }

  for(auto i = 1; i <= n; i++){
    int vertex, dimout;
    cin >> vertex >> dimout;

    vector<int> adjvertices(dimout);
    for(auto j = 0; j < dimout; j++){
      cin >> adjvertices[j];
      mat[vertex][adjvertices[j]] = 1;
    }
  }

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

C++: #include<iostream>
#include<math.h>
#include<string>
#include<vector>
#include<algorithm>
#include<queue>
using namespace std;
#define INF 1<<20

struct edge{
	int to;
	int cost;
	edge() {};
	edge(int a, int b) {
		to = a;
		cost = b;
	}
};

struct Node {
	int pos;
	int cost;
	Node() {};
	Node(int a, int b) {
		pos = a;
		cost = b;
	}
	bool operator <(const Node& rhs) const {
		return cost > rhs.cost;
	}
};

void dijkistra(int st, int TO,int V,vector<vector<edge> > graph) {
	priority_queue<Node> q;
	vector<int> d(V);
	for (int i = 0;i < V;i++) {
		d[i] = INF;
	}
	d[st] = 0;
	q.push(Node(st, 0));
	while (!q.empty()) {
		Node s = q.top(); q.pop();
		int pos = s.pos;
		for (int i = 0;i < graph[pos].size();i++) {
			int to = graph[pos][i].to;
			int cost = graph[pos][i].cost;
			if (d[pos] + cost < d[to]) {
				d[to] = d[pos] + cost;
				q.push(Node(to, d[to]));
			}

		}
	}
	cout << d[TO] << endl;
}
int partition(int A[],int p, int r) {
	int x = A[r];
	int i = p - 1;
	for (int j = p;j < r;j++) {
		if (x >= A[j]) {
			i = i + 1;
			swap(A[i], A[j]);
		}
	}
		swap(A[i + 1], A[r]);
		return i + 1;
}
void quicksort(int A[], int p, int r) {
	if (p < r) {
		int q = partition(A, p, r);
		quicksort(A, p, q-1);
		quicksort(A, q + 1, r);
	}
}

int getNumberOfCoin(int C[],int n,int m) {
	int T[50000];
	for (int j = 0;j <= n;j++) {
		T[j] = INF;
	}
	T[0] = 0;
	for (int i = 0;i < m;i++) {
		for (int j = 0;j <= n;j++) {
			if (j - C[i] >=0  ) {
				T[j] = min(T[j], T[j - C[i]] + 1);
			}
		}
	}
	return T[n];
}
int knapsack(int w, int n,int* v,int* ww) {
	int W[101][10001];
		for (int j = 0;j <= w;j++) {
			W[0][j] = 0;
		}
	for (int i = 0;i < n;i++) {
		for (int k = 0;k < n;k++){
			for (int j = 0;j <= w;j++) {
				if (j - ww[k] < 0) {
					W[i + 1][j] = W[i][j];
				}
				if (j - ww[i] >= 0) {
					W[i + 1][j] = max(W[i][j], W[i][j - ww[k]] + v[k]);

				}
			}
		}
	}
	return W[n][w];
}
int main() {
	int point;
	cin >> point;
	vector<queue<int> >lis(point);
	for (int i = 0;i < point;i++) {
		int V,edges;
		cin >> V>>edges;
		for (int j = 0;j < edges;j++) {
			int h;
			cin >> h;
			lis[i].push(h-1);
		}
	}

	vector<vector<int> > v(point, vector<int>(point, 0));
	for (int i = 0;i < point;i++) {
		while (!lis[i].empty()) {
			int j = lis[i].front();
			lis[i].pop();
			v[i][j] = 1;
		}
	}
	for (int i = 0;i < point;i++) {
		for (int j = 0;j < point;j++) {
			cout << v[i][j]<<" ";
		}
		cout << endl;
	}

	return 0;
	
}

int isPrime(int x) {
	if (x <= 1) return false;
	if (x>2 && x % 2 == 0) return false;
	for (int i = 2;i <= sqrt(x);i++) {
		if (x%i == 0) {
			return false;
		}
	}
	if (x == 2) return true;
	return true;
}