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1575 articles

dsa3 min read

Build range query structures in O(sqrt n) per query with block decomposition. Simpler alternative to segment trees.

April 22, 2025Read →

dsa3 min read

Solve systems of modular congruences with the Chinese Remainder Theorem. Fundamental for cryptography and competitive math.

April 21, 2025Read →

dsa3 min read

Explore classic number sequences: Fibonacci, Lucas, Pell, tribonacci, with DP and matrix approaches.

April 20, 2025Read →

dsa3 min read

Master bitwise operations for DSA: XOR tricks, Brian Kernighan bit counting, subset enumeration, and bitmask DP.

April 19, 2025Read →

dsa3 min read

Solve linear recurrences like Fibonacci in O(log n) using matrix exponentiation. Essential for DP optimization on large n.

April 18, 2025Read →

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