Practice Problems

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

Practice Problems

ProblemTopics Solvers Acceptance Difficulty
Courier Convoys graphs flow 0 — 2200
Exactly K Flights graphs matrix-exponentiation 0 — 2200
Optimal Search Tree dp interval-dp 0 — 2200
System of Remainders number-theory 0 — 2200
K-th Smallest XOR Value bitwise linear-algebra 0 — 2200
Counting Necklaces combinatorics number-theory 0 — 2200
Two Squares number-theory 0 — 2200
Dictionary Match Count strings aho-corasick 0 — 2200
Rank Among the Suffixes strings suffix-array 0 — 2200
The Nearest Two divide-and-conquer geometry 0 — 2200
Shortest Reaching Subarray (Negatives) prefix-sums deque 0 — 2200
Distinct Palindromic Subsequences strings dp 0 — 2200
Rainwater on a Terrain bfs heap 0 — 2200
Bounded XOR Count bitwise digit-dp 0 — 2200
Perfect Assignment dp bitmask 0 — 2300
Factor the Giant number-theory pollard-rho 0 — 2300
Solve the Exponent number-theory 1
100%
2300
Find a Primitive Root number-theory 0 — 2300
How Many Distinct Substrings strings suffix-array 0 — 2300
Area of Overlapping Rectangles geometry sweep-line 0 — 2300
The Runner-Up Spanning Tree graphs union-find 0 — 2300
Most Frequent in a Slice offline 0 — 2300
Square Root Modulo a Prime number-theory 0 — 2400
The K-th Distinct Substring strings suffix-array 0 — 2400
Connecting Cities by Grid geometry greedy 0 — 2400
Avoid the Set {00, 11} combinatorics aho-corasick matrix-exponentiation 5
100%
2400
Avoid the Set {010, 101} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {000, 111} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {11, 010} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {00, 11, 22} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {012, 210} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {00, 12} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {aa, bab} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Avoid the Set {ab, bc, ca} combinatorics aho-corasick matrix-exponentiation 0 — 2400
Power Tower Modulo number-theory 0 — 2400