source_code: import java.util.*;
  public class Test { public static void main(String[] args)
  {
  Scanner sc = new Scanner(System.in);
  int n= sc.nextInt();
  int x= (int)Math.sqrt(n) ;
  int a[] = new int[n+5];
  for(int i=1,o=n,j;i<=n;i+=x)
  for(j=(int)Math.min(i+x-1,n);j>=i;a[j--]=o--);
  for(int i=1;i<=n;i++)System.out.print(a[i]+" ");
  System.out.println();
  
  
  } 
  }