Practice Problems

Daily Challenge: Paths Around the Walls (1500) Solve it to start a streak

Practice Problems

ProblemTopics Solvers Acceptance Difficulty
Spread the Routers binary-search 0 1700
Edit Distance strings dp 0 1700
Longest Palindromic Subsequence strings dp 0 1700
Shuffled Together strings dp 0 1700
Cheapest Route graphs shortest-paths 0 1700
How Many Shortest Routes bfs graphs 0 1700
Range GCD Queries math sparse-table 0 1700
All Digits Different math 0 1700
Two Remainder Conditions math number-theory 0 1700
Rainwater in the Ruins two-pointers 0 1700
Smaller Ones Before Me fenwick sorting 0 1700
Dynamic Range Sum segment-tree 0 1700
Dynamic Range Minimum segment-tree 0 1700
Dynamic Range Maximum segment-tree 0 1700
Dynamic Range GCD segment-tree 0 1700
Dynamic Range XOR segment-tree 0 1700
Numbers That Only Climb digit-dp 0 1700
How Many Longest Increasing dp 0 1700
No Two Neighbours Chosen dp trees 0 1700
How Often Each Prefix Appears strings kmp 0 1700
Nodes on Cycles graphs 0 1700
Sentence Reconstructions strings dp 0 1700
Sum of Remainders number-theory 0 1700
Pell Numbers Modulo matrix-exponentiation 0 1700
Jacobsthal Numbers Modulo matrix-exponentiation 0 1700
Lucas Numbers Modulo math matrix-exponentiation 0 1700
A 2-3 Recurrence math matrix-exponentiation 0 1700
A 3-2 Recurrence math matrix-exponentiation 0 1700
A 1-6 Recurrence math matrix-exponentiation 0 1700
Digits That Only Fall digit-dp 0 1700
Subarrays with Small Product two-pointers 0 1700
Recurrence f=a+2b math matrix-exponentiation 0 1700
Recurrence f=4a+b math matrix-exponentiation 0 1700
Fibonacci Shifted math matrix-exponentiation 0 1700
Recurrence f=2a+2b math matrix-exponentiation 0 1700
Recurrence f=6a-8b math matrix-exponentiation 0 1700
Point Assign, Range Max segment-tree 0 1700
Crossing Segments geometry 0 1700
Rabbit Pairs math matrix-exponentiation 0 1700
Splitting Cells math matrix-exponentiation 0 1700
Doubling Plus Carry math matrix-exponentiation 0 1700
Compound with Memory math matrix-exponentiation 0 1700
Sequence f=1a+3b math matrix-exponentiation 0 1700
Sequence f=3a+1b math matrix-exponentiation 0 1700
Sequence f=2a+5b math matrix-exponentiation 0 1700
Sequence f=5a+2b math matrix-exponentiation 0 1700
Sequence f=4a+3b math matrix-exponentiation 0 1700
Sequence f=1a+4b math matrix-exponentiation 0 1700
Sequence f=2a+4b math matrix-exponentiation 0 1700
Sequence f=6a+1b math matrix-exponentiation 0 1700