donkey-kong

Your mission

Return the lowest level whose bonus timer falls under the time a player needs.

today's brief

1982. Donkey Kong never ends, it just loops, and on level 22 the bonus timer comes up at 400 instead of thousands. Mario dies before he can climb. The board cannot be finished, so the machine eats all four lives and puts up game over. That timer is worked out from the level number and kept in a single byte, and past level 21 the number stops fitting. Find the first level where it stops fitting.

See it in action

kill_screen_level(500)

Expected result

Your checklist

For your own tracking. Tests grade your code.

The bonus timer of a level is level * 10 + 40, kept in a single byte, so only the remainder after 256 survives, and that byte is then multiplied by 10.
Return the lowest level from 1 to 255 whose bonus timer is under need.
Return -1 when no level from 1 to 255 falls under need.

More examples

kill_screen_level(501)

Expected result

kill_screen_level(0)

Expected result

-1

Constraints

Expected files

bonus.c

Allowed functions

None. Write every helper yourself.

Back to compete

Solutions

donkey-kong

Your mission

Return the lowest level whose bonus timer falls under the time a player needs.

today's brief

See it in action

kill_screen_level(500)

Expected result

Your checklist

For your own tracking. Tests grade your code.

The bonus timer of a level is level * 10 + 40, kept in a single byte, so only the remainder after 256 survives, and that byte is then multiplied by 10.
Return the lowest level from 1 to 255 whose bonus timer is under need.
Return -1 when no level from 1 to 255 falls under need.

More examples

kill_screen_level(501)

Expected result

kill_screen_level(0)

Expected result

-1

Constraints

Expected files

bonus.c

Allowed functions

None. Write every helper yourself.

Back to compete

Solutions