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AtCoder Solutions 1: Number Theory, Binary Search, and RepresentationMarch-June 2024, primarily based on original solution records, including ABC 340 F, 341 D, 346 D/E/F, 356 D/E/F.
19 min read English -
Codeforces Solutions 3: Number Theory, Games, Combinatorics, and EDUSolutions from Jan-Sep 2024, focusing on number theory, game theory, combinatorics, and EDU problems from Codeforces.
53 min read English -
From Convolution to Inversion: What Mobius Inversion DoesBased on original number theory notes, covering Dirichlet convolution, Möbius function, inversion techniques, and common identities.
9 min read English -
Sieve Methods Beyond Primes: A Unified View of Linear SieveBased on original number theory notes, covering prime sieves, Euler's totient function, and Wilson's theorem.
10 min read English -
From Divisibility to Congruence: Number Theory BasicsBased on original number theory notes, covering gcd, lcm, Bezout, exgcd, fast power, modular inverse, and CRT.
9 min read English