CategoriesCTF2Math20Misc1OI35solution19template7project1sympy1Tagstree-diameter1tree-centroid1tree3tools2theme1surreal-numbers1sort1sieve1shortest-path1set-theory1sequence6project-euler1probability1prime3prefix-sum2powerful-number1poly1number-theory5math(oi)6math2luogu1linear-algebra1io2interactive1integrate2hash2hack1greedy2graph6geometry3general-term5games3fixed-point4finite-difference2equation2dsu-on-tree1distance2data-structure4constructive2communication1combinatorics2codeforces2brute-force1bitset2bits2binary-search1binary-lifting1Theorem5OGF2Mo-algo2MST1Dynamic-Programming7Calculus7Bugs1Axiom1Ad-hoc3Category: solution2025-0808-20合金 (JSOI 2007)08-20排序问题 (JXOI 2018)08-19平方数 (SNOI 2024)08-18Bracket Pairing08-18Subarray Sum Divisibility (ABC 419)08-18foreverlasting and fried-chicken (HDU 2023(2))08-13Gastronomic Event (SWERC 2021)08-13铁路 2 (KTSC 2024 R1)08-12Mr. Liang play Card Game (HDU 2023(1))08-09Binary Operation (ABC 418 G)08-09Increasing Numbers (AGC 011 E)08-09Luogu 981608-09Broken Device (JOISC 2017)08-07(PA2016 R1 A) Gra w karty08-04Luogu 120032025-0505-21十二重计数法05-20CF2109C (Div. 2) Hacking Numbers05-19PE484 Arithmetic Derivative05-19CF2101B (Div. 1) Quartet Swapping∧