Level 5 · Interview mastery
Timed practice
About 10 steps, from the first idea to a mastery test.
Stage 0Timed set 15 stepsFree
- 1Joining two islands14 min
- 2Longest mirror subsequence14 min
- 3Ladders or bricks20 min
- 4Watching every branch22 min
- 5Rain between the walls20 min
Stage 1Timed set 25 stepsFree
- 1A chain reaction14 min
- 2Ring of houses12 min
- 3Insert operators to reach a target26 min
- 4The longest climb18 min
- 5Pairs that fill up a k12 min