号码分配过程中，用如下格式表示已经分配的号码：a1-b1,a2-b2, ... ,ai-bi, ... ,an-bn，其中ai-bi表示一段连续号码，ai代表起始号码，bi代表结束号码，简称号码段。

例如：

12-30,40-50,100-200

表示12到30号，40到50号，100到200号已经分配。

号码段之间用“,”分隔，号码段起止号码用“-”连接。

给定字符串s1，代表已经分配的号码，格式如上；

s2代表将要分配的号码，格式为a1-b1，即一个号码段。

编写程序给出最后分配的结果s3。

举例如下：

s1= 10-20,30-50

s2= 22-25

则s3= 10-20,22-25,30-50 。号码段22-25按顺序插入到了“10-20,30-50”之间。

编写中注意号码段合并问题，例如：

s1= 1-3,8-20

s2= 4-7

则s3不能等于 1-3,4-7,8-20 ，而是要将号码段进行合并。

合并后的结果应当是

s3= 1-20 -Number allocation process, using the following format has been assigned number: a1-b1, a2-b2, ..., ai-bi, ..., an-bn, where ai-bi expresses a sequential number, ai representatives from starting number, bi representative ending number, referred to paragraph numbers.

For example:

12-30,40-50,100-200

Said to the 30th 12, 40-50 number, 100-200 number has been assigned.

Between the number of segments with　,　separated, the beginning and ending number with the number of segments　-　connections.

S1 given string, representing the number has been assigned, the format above　

s2 representative will be assigned numbers in the format a1-b1, that a number of segments.

The results given in the last programming assignment s3.

Examples are as follows:

s1 =　10-20,30-50　

s2 =　22-25　

The s3 =　10-20,22-25,30-50 . No segment 22-25 sequentially inserted into the　10-20,30-50　between.

Write the note numbers merger section, for example:

s1 =　1-3,8-20　

s2 =　4-7　

S3 is not e