#include<iostream>
#include<fstream>
using namespace std;
ifstream fin("listavecini.in");
ofstream fout("listavecini.out");
int a[101][101]={0};
int n,m;
void matad(int a[101][101], int &n)
{int x,y;
  cin>>n;
while(cin>>x>>y)
{
a[x][y]=1;
a[y][x]=1;
 
}
}
int grad(int k)
{   int s=0;
	for( int j=1;j<=n;j++)
s=s+a[k][j];
 
}
 
int main()
{int i,j;
    matad(a,n);
for(i=1;i<=n;i++)
{fout<<grad(i)<<" ";
for(j=1;j<=n;j++) if(a[i][j]==1) cout<<j<<" ";
cout<<endl;}
 return 0;}

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NQoxIDQgCjEgMyAKMyA1IAo0IDUgCjIgNCAKMSAyIAo0IDIgCjMgNCA=

5
1 4 
1 3 
3 5 
4 5 
2 4 
1 2 
4 2 
3 4