get power

1643.rb

def cut8column(num)
  if num.to_s.size > 8
    num.to_s.slice(-8, 8).to_i
  else
    num
  end
end

def get_pow(b, exponent)
  if b == 0
    return nil
  end
  b = cut8column b
  #puts "#{b} #{exponent}"
  if exponent == 0
    1
  elsif exponent % 2 == 0
    cut8column get_pow(b*b, (exponent / 2))
  else
    cut8column b * get_pow(b, exponent - 1)
  end
end

def solve
  raw_list = []
  while str = STDIN.gets.chomp
    break if str.empty?
    raw_list.push str.split ' '
  end

  raw_list.each { |nums|
    puts  get_pow( nums[0].to_i, nums[1].to_i )
  }
end
solve