Problem:
Print a Rectangle

Draw a rectangle which has a height of H cm and a width of W cm. Draw a 1-cm square by single '#'.

Input

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

Output

For each dataset, print the rectangle made of H × W '#'.

Print a blank line after each dataset.

Constraints

1 ≤ H ≤ 300

1 ≤ W ≤ 300

Sample Input

3 4
5 6
2 2
0 0

Sample Output

####
####
####

######
######
######
######
######

##
##

Solution in Scala (judge verdict: WA: Presentation Error)

import scala.collection.mutable.ListBuffer
import scala.io.StdIn

object Main extends App {

  var temp = Array(-1, -1)
  val buff = new ListBuffer[(Int, Int)]
  while(temp(0) != 0 && temp(1) != 0){
    temp = StdIn.readLine().split(' ').map(_.toInt)
    buff += ((temp(0), temp(1)))
  }

  val result = buff.dropRight(1).map { case (h, w) =>
    (0 until h).map { _ =>
      Array.fill(w)("#").mkString("")
    }.mkString(f"%n")
  }
  println(result.mkString(f"%n%n"))
}