import java.io.*;
class A
{
void draw ( int n )
{
System.out.println("\n");
for ( int i=0,k=0 ; i<n ; i++ )
{
for ( int j=0 ; j<=i ; j++,k++ )
System.out.print( k + " " );
System.out.println("\n");
}
}
}
class Pattern3
{
public static void main ( String args[] )
throws IOException
{
BufferedReader br = new BufferedReader ( new InputStreamReader ( System.in) );
System.out.print("\n\nEnter size : ");
int m = Integer.parseInt ( br.readLine() );
A a = new A();
a.draw ( m );
}
}
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