Problem: Sign of permutations

Code: Sign+of+permutations/tails_1643893872

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)

`* . `_ ~ 
        _ 
     / $ 
       `$ - @