hi
i cant recognize ! ab-b-a
weight of a is : 1/2 = 0.5
and for b is : 1/1 = 1
so b is correct answer …
okay im confused !!!
i was accept all test case except this !!!
I’m confused too. What are you talking about? 
oh and you lost me there: 1/5 = 0.5
ok 
1/2 = 0.5 
…solved