Problem: Twelve

Code: Twelve/tails_1642477453

Nibbles version: 0.2 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 | 1.00

Format: Compact | Simple | +Type | Table | JSON | .nbl (DeBruijn) | .nbl (names)

. (map) 
    hex (to hex) 
        + (add) 
            ; (let) -->let( C ) 
                + (sum) 
                    . (map) 
                        @ (= fstLine) 
                        , (length) <--arg( A ) 
                            | (filter) 
                                `, (range from 0) 
                                    $ (= A) 
                                \ (char class) <--arg( B ) 
                                    $ (= B) 
                                    n (isAlphaNum) 
            * (multiply) 
                / (divide) 
                    $ (= C) 
                    12 (integer) 
                4 (integer) 
    `) (to uppercase) <--arg( D ) 
        $ (= D)