562749917	1> 572749917	=> 549917 (627)
549918		1> 549919		=> 549
549			4> 949			=> None (6)
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562749917 	3> 565749917	=> 749917	(562)
749917		2> 949917		=> 917
917			2> 919			=> None (7)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
562749917	2> 564749917	=> 569917	(274)
569917		3> 969917		=> 917
917			2> 919			=> None (7)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
562749917	2> 562949917	=> 562917	(749)
562917		1> 562927		=> 567
567			2> 767			=> None (5)
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562749917	5> 562799917	=> 562717	=> 562 (499)
562717		1> 562727		=> 567
567			2> 767			=> None (8)
562717		1> 572717		=> 517
517			2> 757			=> None (8)
562			3> 565			=> None (8)
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562749917	8> 562749997	=> 562747 (499)
562747		=> 562
563			2> 565			=> None (10)
562747		2> 564747		=> 567
567			2> 767			=> None (12)
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562749917	2> 562749919	=> 562749 (917)
562749		2> 562949		=> 562
562			3> 565			=> None (7)
562749		2> 564749		=> 569
569			4> 69			=> None (8)
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562749917
Add solution for problem B2
Add solution for problem B2
