In the editorial,they have simply considered that the answer shoould be (no of ones in string )*(2^(s-1))

but they have not considered the repeating subsequences.I am not getting it why.

i know they have a line **“” The subsequence 11 appears twice and should be counted as different while computing the sum.""**

but I am not exactly sure how it is helping with this.

**case due to which i have this doubt:**