Ask AI
Open a hint-first prompt in a new AI chat. Grok may ask you to confirm before sending.
Open Claude Desktopdynamic-programming · arrays · interleavings
The organizer’s problem statement is available at the official source link.
interleaving blocks
A block starts whenever the interleaved value changes
An interleaving chooses the next unused item from A or B; adjacent equal values merge into one block.
take A_i or B_jappend next valuenew block iff value changes
- 1
Track consumed prefixes
Represent a partial merge by positions consumed from A and B plus the last emitted value. - 2
Extend or start a block
Each next choice either extends the current block or starts another. - 3
Count exact K
Count paths to the end with exactly K blocks.
Tools
1
2
3
4
5
6
7
8
9
10
11
12
Draft saved locally
|12 lines, 156 charsRun output
Run your code to see output.