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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace prac1
{
    class Program
    {
        static void Main(string[] args)
        {
            for (int i = 1; i > 0; i++)
            {
                string[] str = Console.ReadLine().Split(' ');//H,Wを配列に読み込む
                int H = int.Parse(str[0]);
                int W = int.Parse(str[1]);

                if (H == 0 && W == 0) break;//H=W=0の時、何も起こらない
                else
                {
                    for (int s = 0; s < H; s++)//H個の#をH行書く
                    {
                        for (int m = 0; m < W; m++)//#を1行にW個かく処理を書きたい
                        {
                            Console.Write("#");
                        }
                        Console.Write("\n");
                    }
                    Console.WriteLine();
                }
            }
        }
    }
}