Problem: Code Festival A If you cannot solve this

Code: Code+Festival+A+If+you+cannot+solve+this/tails_1642142485

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)

? (if/else):[chr] 
    - (subtract):int 
        * (multiply):int 
            * (multiply):int 
                = (subscript (wrapped)):int 
                    2 (integer):int 
                    _ (= ints):[int] 
                ~ (auto = 2):auto 
            $ (= fstInt):int 
        + (sum):int 
            >> (tail):[int] 
                _ (= ints):[int] 
    "Pass" (string):[chr] <--arg( A:int ) 
    "Fail" (string):[chr]