Restoration of string

Maximum Element

Symmetric Projections

Div. 64

字符串 · 数学 · 进制

Cubes for Masha

枚举

Solution for Cube

Ratings and Reality Shows

Little Brother

Row of Models

Local Extrema

模拟

Buggy Robot

K-Dominant Character

Almost Identity Permutations

Maximum Subsequence

搜索 · 贪心 · 枚举

Connecting Vertices

动态规划 DP · 区间 DP

Xor-MST

深度优先搜索 DFS · 生成树 · 进制 · 字典树 Trie

Mod Mod Mod

Pride

Gluttony

Envy

生成树 · 连通块 · 虚树

Sloth

Lust

Greed

Wrath

Chess For Three

Beautiful Divisors

Rumor

Credit Card

Counting Arrays

Subtree Minimum Query

可持久化线段树

QAQ

字符串 · 递归 · 枚举

Ralph And His Magic Field

Marco and GCD Sequence

Ralph And His Tour in Binary Country

Ralph and Mushrooms

Pizza Separation

XK Segments

Square Subsets

动态规划 DP · 数学 · 状态合并 · 线性基 · 位运算

String Mark

Eyes Closed

Nephren gives a riddle

字符串 · 递归

Ithea Plays With Chtholly

Willem, Chtholly and Seniorious

暴力数据结构 · 颜色段均摊（珂朵莉树 ODT） · 枚举 · 排序 · 构造

Nephren Runs a Cinema

Welcome home, Chtholly

并查集 · 分块

Scarborough Fair

模拟 · 字符串

Chtholly's request

枚举 · 构造

Rounding

模拟 · 字符串 · 枚举

Proper Nutrition

枚举

Phone Numbers

字符串 · 字典树 Trie