Practice Problems

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

Practice Problems — 1600-2000

ProblemTopics Solvers Acceptance Difficulty
Sequence g=7a+1b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=2a+7b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=7a+3b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=3a+8b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=8a+2b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=6a+5b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=5a+7b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=6a+7b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=9a+3b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=3a+9b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=11a+1b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Sequence g=1a+11b (g0=0,g1=1) math matrix-exponentiation 0 — 1700
Minimum Insertions to Palindrome strings dp interval-dp 0 — 1700
Sequence r=3a+2b (r0=0,r1=1) math matrix-exponentiation 0 — 1700
Sequence r=4a+5b (r0=0,r1=1) math matrix-exponentiation 0 — 1700
Sequence r=5a+4b (r0=0,r1=1) math matrix-exponentiation 0 — 1700
Tribonacci Modulo matrix-exponentiation 0 — 1750
Padovan Numbers Modulo math matrix-exponentiation 0 — 1750
Perrin Numbers Modulo math matrix-exponentiation 0 — 1750
Narayana's Cows Modulo math matrix-exponentiation 0 — 1750
Fibonacci, Astronomically math 0 — 1800
Counting Embeddings strings dp 0 — 1800
Maximum XOR of a Pair bitwise 0 — 1800
Running Median heap 0 — 1800
K-th in the Times Table binary-search 0 — 1800
Strongly Connected Pieces graphs scc 0 — 1800
Free and Paid Roads bfs graphs 0 — 1800
Walks of Astronomical Length graphs matrix-exponentiation 0 — 1800
K Generations Up trees binary-lifting 0 — 1800
Broken Calculator math greedy 0 — 1800
Sum of Floor Divisions number-theory 0 — 1800
Partitions into K Groups combinatorics 2
25%
1800
Vertices of the Hull geometry 0 — 1800
Hull Edge Energy geometry 0 — 1800
Most Points on a Line geometry 0 — 1800
Subtraction Game Oracle dp games 0 — 1800
Where Am I After K Jumps graphs binary-lifting 0 — 1800
Longest Arithmetic Subsequence dp 0 — 1800
Coins of 1, 3 and 4 dp 0 — 1800
Geometric Sum, Large math 0 — 1800
Attend the Most Events greedy heap 0 — 1800
Ways to Partition a Set dp combinatorics 0 — 1800
Remove a Square Number dp games 0 — 1800
Remove a Power of Two dp games 0 — 1800
Halve or Decrement dp games 0 — 1800
Remove a Fibonacci Number dp games 0 — 1800
Remove One, Three, or Four dp games 0 — 1800
Remove a Proper Divisor dp games 0 — 1800
Remove Up to Half dp games 0 — 1800
Remove a Triangular Number dp games 0 — 1800