Fixed in latest fork

Fixed.

it can be seen in the home page (for people who don't know)

I think OP meant "" is neither tested nor mentioned anywhere in the description

fixed

I agree... The 'Simple' time bomb is a higher kyu level than the 'Hard' one?..

Quite surprising this wasn't a requirement or tested. It's bad practice to mutate something inside a function when it is not explicitely expected.

Reraised above with more detail

This is a 7 kyu IF you give some sort of description. Without that, probably a 6 kyu.

What do you mean exactly? What should be mentionned?

Thank you!

1 + 2 = 3,  cost = 3,
3 + 3 = 6,  cost = 6,
6 + 4 = 10, cost = 10
Total = 19.

Use a spoiler flag.