character(100)::INPUT
  integer::x=0,y=0,i
  read *,INPUT

  do i=1,LEN_TRIM(INPUT)
     select case(INPUT(i:i))
     case ('S')
        y=y-1
     case ('N')
        y=y+1
     case ('E')
        x=x+1
     case ('W')
        x=x-1
     end select
  end do
  print '(f0.2)', sqrt(REAL(x*x+y*y))
end program