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 <iostream>
#include <vector>

int main(){
    int n;
    std::cin >> n;
    std::vector<int> Adj[n];
    //input_graph
    int u, k, v;
    for(int i=0; i<n; i++){
        std::cin >> u >> k;
        for(int j=0; j<k; j++){
            std::cin >> v;
            Adj[u-1].push_back(v);
        }
    }

    //input_A
    int A[n][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++){
        int len = Adj[i].size();
        for(int j=0; j<len; j++){
            A[i][Adj[i][j]-1] = 1;
        }
    }

    //output_A
    for(int i=0; i<n; i++){
        for(int j=0; j<n; j++){
            if(j+1==n)  std::cout << A[i][j] << '\n';
            else        std::cout << A[i][j] << " ";
        }
    }
    return 0;
}

C++: #include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define rall(v) v.rbegin(), v.rend()
#define rep(i,n) for (int i=0;i<(int)(n);i++)
#define codefor int test;scanf("%d",&test);while(test--)
#define yn(ans) if(ans)printf("Yes\n");else printf("No\n")
#define YN(ans) if(ans)printf("YES\n");else printf("NO\n")
#define vector2d(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define umap unordered_map
#define uset unordered_set
using namespace std;
using ll = long long;
const int MOD=1000000007;
//入力系
void scan(int& a){scanf("%d",&a);}
void scan(long long& a){scanf("%lld",&a);}
template<class T> void scan(T& a){cin>>a;}
template<class T> void scan(vector<T>& vec){for(auto&& it:vec)scan(it);}
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){scan(head);in(tail...);}
//出力系
void print(const int& a){printf("%d",a);}
void print(const long long& a){printf("%lld",a);}
void print(const double& a){printf("%.15lf",a);}
template<class T> void print(const T& a){cout<<a;}
template<class T> void print(const vector<T>& vec){if(vec.empty())return;print(vec[0]);for(auto it=vec.begin();++it!= vec.end();){putchar(' ');print(*it);}}
void out(){putchar('\n');}
template<class T> void out(const T& t){print(t);putchar('\n');}
template <class Head, class... Tail> void out(const Head& head,const Tail&... tail){print(head);putchar(' ');out(tail...);}
//デバッグ系
template<class T> void dprint(const T& a){cerr<<a;}
template<class T> void dprint(const vector<T>& vec){if(vec.empty())return;cerr<<vec[0];for(auto it=vec.begin();++it!= vec.end();){cerr<<" "<<*it;}}
void debug(){cerr<<endl;}
template<class T> void debug(const T& t){dprint(t);cerr<<endl;}
template <class Head, class... Tail> void debug(const Head& head, const Tail&... tail){dprint(head);cerr<<" ";debug(tail...);}
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll modpow(ll a, ll b, ll p){ ll ans = 1; while(b){ if(b & 1) (ans *= a) %= p; (a *= a) %= p; b /= 2; } return ans; }

int main(){
    int n,m,x,a;
    in(n);
    vector2d(int,graph,n,n,0);
    rep(i,n){
        in(a,m);
        rep(j,m){
            in(x);
            //debug(x);
            graph[a-1][x-1]=1;
        }
    }
    rep(i,n)out(graph[i]);
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    vector<vector<int>> mat(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;
            mat.at(u-1).at(v-1)=1;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cout << mat.at(i).at(j);
            if(j==n-1) cout << endl;
            else cout << " ";
        }
    }
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> p;


int main(void){
  int n,a,b,c;
  cin >> n;
  int v[n][n];
  for(int i=0;i<n;i++){
    cin >> a >> b;
    for(int j=0;j<b;j++){
      cin >> c;
      v[a-1][c-1]=1;
    }
  }
  for(int i=0;i<n;i++){
    for(int j=0;j<n;j++){
      if(v[i][j]!=1)cout << 0 << ' ';
      else cout << v[i][j] << ' ';
    }
    cout << endl;
  }
  return 0;
}

C++: #include <iostream>
#include <queue>
#include <stack>
#include <cstdio>
#include <vector>
#include <sstream>
#include <stdio.h>
#include<cstdio>

//#include<string>
//#include<cmath>
//#include<map>
//#include<cstdlib>
//#include<deque>
//#include<queue>
//#include<climits>
//#include<cstring>
using namespace std;

const int N_MAX = 1000000;

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

  // table
  int** table = new int*[N];
  for(int i=0; i<N; i++){
    table[i] = new int[N];
    memset(&table[i][0], 0, N*sizeof(table[i][0]));
    // &table[i][0] can be table[i] because it only needs head address.
    
    //[..., [int, int,int], ...]
    // memset(start_addr, 0, delta_arr) fills
    // start_addr to (start_addr + delta_arr) by 0.
    // table[i] refers to the first addr of table[i],
    // for each integer to be filled by 0, size of the element
    // (not table[i]) should be given.
  }
  
  for(int i=0; i<N; i++){
    int row_num, k;
    cin >> row_num >> k;

    row_num--;
    
    for(int j=0; j<k; j++){
      int col_num;
      cin >> col_num;
      col_num--;
      table[row_num][col_num] = 1;
    }
  }

  //print table
  for(int i=0; i<N; i++){
    for(int j=0; j<N; j++){
      cout << table[i][j];
      if(j!=N-1) cout << " ";
      else cout << endl;
    }
  }
  
  for(int i=0; i<N; i++){
    delete[] table[i];
  }
  delete[] table;
  
  return 0;
}

C++: #include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;

bool A[110][110];

int main (){
	int n,a,b,c;
	cin>>n;
	for(int i=1;i<=n;i++){
			for(int j=1;j<=n;j++){
				A[i][j]=false;
		}
	}
	for(int i=1;i<=n;i++){
		cin>>a>>b;
		for(int j=1;j<=b;j++){
			cin>>c;
			A[a][c]=true;
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(j==n) cout<<A[i][j]<<"\n";
			else cout<<A[i][j]<<" ";
		}
	}
	return 0;
}

C++: #include <iostream>
#include <queue>
#include <stack>
#include <cstdio>
#include <vector>
#include <sstream>
#include <stdio.h>

using namespace std;

const int N_MAX = 1000000;

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

  // table
  int** table = new int*[N];
  for(int i=0; i<N; i++){
    table[i] = new int[N];
    memset(&table[i][0], 0, N*sizeof(table[i][0]));
    // &table[i][0] can be table[i] because it only needs head address.
    
    //[..., [int, int,int], ...]
    // memset(start_addr, 0, delta_arr) fills
    // start_addr to (start_addr + delta_arr) by 0.
    // table[i] refers to the first addr of table[i],
    // for each integer to be filled by 0, size of the element
    // (not table[i]) should be given.
  }
  
  for(int i=0; i<N; i++){
    int row_num, k;
    cin >> row_num >> k;

    row_num--;
    
    for(int j=0; j<k; j++){
      int col_num;
      cin >> col_num;
      col_num--;
      table[row_num][col_num] = 1;
    }
  }

  //print table
  for(int i=0; i<N; i++){
    for(int j=0; j<N; j++){
      cout << table[i][j] << " ";
    }
    cout << endl;
  }
  
  for(int i=0; i<N; i++){
    delete[] table[i];
  }
  delete[] table;
  
  return 0;
}