Kotlin When statements problem .😴

Question

Why this code not running on code playground 🙄🙄

https://code.sololearn.com/ch3Lttd4sQEL/?ref=app

Answer 1

but it's working in other compiler 🙄

Answer 2

Why are you using Java Scanner instead of the Kotlin input. Remove all your current input lines and just replace with;

var a = readLine()!!.toInt()

P.S. the main issue with your use of Java Scanner has to do with the backticks around System`.in`.

Your when statement itself is fine.