Why I'm getting runtime error?

Here is the problem is known as “Star” from AtCoder.

Here is my code as result of RE(Runtime Error) :

let num = Number(prompt());
console.log(100 - (num%100));

Is there any better solution, why runtime error?

propmt seems like it might be a typo

1 Like

@caryaharper Thank you, I fix this. But it’s still same.