# code: http://golf.shinh.org/reveal.rb?n+section/tails_1645187282&nbb
# target Nibbles version: 0.2
# commenter version: 0.1.2.181

#(implicit foldl1):int 
    , #(range from 1):[int] 
        ^ #(pow):int 
            r #(read str at base):int 
                @ #(= fstLine):[chr] 
                4 #(integer):int 
            2 #(integer):int 
    @ #(= A):int <--arg( B:int A:int )