# [K (oK)], 9 bytes &/2=#:'.= [Try it online!][TIO-jxvfmzoj] In mobile, explanation to follow. [K (oK)]: https://github.com/JohnEarnest/ok [TIO-jxvfmzoj]: https://tio.run/##y9bNz/7/X03fyFbZSl3P1lzB0FjBUsFIwdAASJiAKLCQiYLl//8A "K (oK) – Try It Online"