Degenerate Matrix

Two Substrings

Preparing Olympiad

Divisibility by Eight

动态规划 DP · 枚举

Regular Bridge

Brackets in Implications

GukiZ and Contest

ZgukistringZ

GukiZ hates Boxes

GukiZ and Binary Operations

GukiZ and GukiZiana

Vanya and Table

Vanya and Books

数论

Vanya and Scales

Vanya and Triangles

Vanya and Brackets

Kyoya and Colored Balls

排列组合

Kyoya and Permutation

Love Triangles

二分图

Nudist Beach

Kyoya and Train

Kyoya and Photobooks

Ohana Cleans Up

Case of Matryoshkas

Case of Fugitive

Case of Chocolate

Case of a Top Secret

Case of Computer Network

图论 · 倍增 · 深度优先搜索 DFS · Tarjan · 双连通分量 · 树链剖分 · 差分

Case of the Zeros and Ones

Case of Fake Numbers

Ilya and Diplomas

Pasha and Tea

Arthur and Table

Vitaly and Cycle

Ann and Half-Palindrome

Lala Land and Apple Trees

Amr and The Large Array

Amr and Chemistry

动态规划 DP · 贪心 · 枚举 · 进制 · 字典树 Trie

Guess Your Way Out! II

A Simple Task

字符串 · 线段树 · 排序

Gerald's Hexagon

Equivalent Strings

Gerald and Giant Chess

动态规划 DP · 组合数学

Randomizer

Gerald and Path

Currency System in Geraldion

Gerald is into Art

Matching Names

Replicating Processes

Logistical Questions