/*
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*/
package BASICJAVA;
import java.util.Scanner;
/**
*
* @author ABIR
*/
public class Hollow_Triangle_Left_Justified_Number {
public static void main(String[]args){
Scanner abir=new Scanner(System.in);
System.out.println("Enter sample input");
int x=abir.nextInt();
System.out.println("sample output");
System.out.println(1);
int c=0;
while(c<x-2){
System.out.print(c+1);
int y=c;
int d=0;
while(d<y){
System.out.print(" ");
d++;
}
c++;
System.out.print(d+1);
System.out.println();
}
int e=0;
while(e<x){
System.out.print(e+1);
e++;
}
System.out.println();
System.out.println("=======================================================");
}
}