Problem: Merry Christmas 2021

Code: Merry+Christmas+2021/darrenks_1640146267

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)

! (zip with) 
    @ (= fstLine) 
    `, (range from 0) <--arg( A ) 
        ~ (auto = infinity) 
    ~ (zipop: by) 
    ? (if/else) <--arg( C B ) 
        $ (= C) 
        ? (if/else) <--arg( D ) 
            % (modulus) 
                / (divide) 
                    _ (= B) 
                    ~ (auto = 2) 
                ~ (auto = 2) 
            '.' (char) <--arg( E ) 
            (implicit arg = D) 
        (implicit arg = C)