Restore the Tree

构造

Chores

Balanced Substring

字符串 · 前缀和

Strange Game On Matrix

Merge Sort

Awards For Contestants

Forbidden Indices

Classroom Watch

Sorting the Coins

National Property

High Cry

线段树 · 倍增 · 二分 · 栈 · ST 表 · 单调栈

Delivery Club

Royal Questions

贪心 · 并查集 · 二分图

Trip For Meal

Divisiblity of Differences

Alex and broken contest

Nikita and string

Slava and tanks

Olya and Energy Drinks

广度优先搜索 BFS · 剪枝

Danil and a Part-time Job

Ann and Books

Short Program

Teams Formation

Tournament

Magic Breeding

Numbers on the blackboard

贪心 · 并查集 · 单调栈 · 离线处理

Borya's Diagnosis

Table Tennis

Automatic Door

Berland Army

Downloading B++

Packmen Strike Back

Field of Wonders

Lost in Transliteration

Orientation of Edges

Palindromic Cut

Photo Processing

Renovation

Road Widening

贪心

Berland.Taxi

Quadcopter Competition

Book Reading

模拟

Japanese Crosswords Strike Back

Bertown Subway

Boxes And Balls

Binary Matrix

Anti-Palindromize

字符串 · 网络流

ACM ICPC

模拟 · 枚举

Vlad and Cafes

Petya and Catacombs