import java.util.*;
import java.lang.*;
import java.io.*;
class Graph
{
private static int vertices = 5;
private static ArrayList[] adj = new ArrayList[vertices];
private static ArrayList[] tr = new ArrayList[vertices];
public static void addedge(int u, int v, boolean choice)
{
if(!choice)
adj[u].add(v);
else
tr[u].add(v);
}
public static void printGraph()
{
for(int i = 0; i < vertices; i++)
{
System.out.print(i + "--> ");
for(int j = 0; j < tr[i].size(); j++)
System.out.print(tr[i].get(j) + " ");
System.out.println();
}
}
public static void getTranspose()
{
for(int i = 0; i < vertices; i++)
for(int j = 0; j < adj[i].size(); j++)
addedge(adj[i].get(j), i, true);
}
public static void main (String[] args) throws java.lang.Exception
{
for(int i = 0; i < vertices; i++)
{
adj[i] = new ArrayList();
tr[i] = new ArrayList();
}
addedge(0, 1, false);
addedge(0, 4, false);
addedge(0, 3, false);
addedge(2, 0, false);
addedge(3, 2, false);
addedge(4, 1, false);
addedge(4, 3, false);
getTranspose();
printGraph();
}
}