circumgyrate the string

  Give you a string, just circumgyrate. The number N means you just   circumgyrate the string N times, and each time you circumgyrate the string for 45 degree anticlockwise.

  In each case there is string and a integer N. And the length of the string is always odd, so the center of the string will not be changed, and the string is always horizontal at the beginning. The length of the string will not exceed 80, so we can see the complete result on the screen.

  For each case, print the circumgrated string.

asdfass 7

a
 s
  d
   f
    a
     s
      s

wangye

HDU 2007-11 Programming Contest_WarmUp