#!/usr/local/bin/ruby

require "cgi-lib"
input = CGI.new


code = input["code"].to_s
if code==""
	code="000"
end

start_num = input["start"].to_s
if start_num==""
	start_num="1"
end

end_num="99999"

print "Content-type:text/plain\n\n"

t=0
for i in start_num..end_num
if t>999
break;
end
t=t+1

num=sprintf("%05d", i)
tmp_str="9784"+code
check_num = tmp_str.to_s+sprintf("%05d", i)
n1=check_num.slice(0,1).to_i
n2=check_num.slice(1,1).to_i
n3=check_num.slice(2,1).to_i
n4=check_num.slice(3,1).to_i
n5=check_num.slice(4,1).to_i
n6=check_num.slice(5,1).to_i
n7=check_num.slice(6,1).to_i
n8=check_num.slice(7,1).to_i
n9=check_num.slice(8,1).to_i
n10=check_num.slice(9,1).to_i
n11=check_num.slice(10,1).to_i
n12=check_num.slice(11,1).to_i

#µìISBN
sum_old=(n4*10)+(n5*9)+(n6*8)+(n7*7)+(n8*6)+(n9*5)+(n10*4)+(n11*3)+(n12*2)

check_digit_old=  11-(sum_old % 11)

if check_digit_old == 10 then
	check_digit_old = "X"
end

if check_digit_old == 11 then
	check_digit_old = "0"
end

isbn_old = "ISBN4" + code  + num.to_s + check_digit_old.to_s

#¿·ISBN
sum_new_odd=n1+n3+n5+n7+n9+n11
sum_new_even=n2+n4+n6+n8+n10+n12

sum_new = sum_new_odd+(sum_new_even*3).to_i

check_digit_new=10-sprintf("%04d", sum_new).slice(3,1).to_i

if check_digit_new == 10 then
	check_digit_new = "0"
end


isbn_new = "ISBN9784" + code + num.to_s + check_digit_new.to_s

puts isbn_old + "," + isbn_new

end