Anya and Cubes

binary search, bitmasks, brute force, dp, math, meet-in-the-middle

Second price auction

bitmasks, probabilities

Permutations

bitmasks, divide and conquer, math

Fox And Jumping

bitmasks, brute force, dp, math

Misha and XOR

bitmasks

Bits

bitmasks, constructive algorithms

Game with Strings

bitmasks, dp, probabilities

Dreamoon and WiFi

bitmasks, brute force, combinatorics, dp, math, probabilities

Design Tutorial: Increase the Constraints

bitmasks, data structures, fft

Fedor and New Game

bitmasks, brute force, constructive algorithms, implementation

Little Pony and Harmony Chest

bitmasks, brute force, dp

Devu and Flowers

bitmasks, combinatorics, number theory

Jzzhu and Numbers

bitmasks, combinatorics, dp

Borya and Hanabi

bitmasks, brute force, implementation

Valera and Number

bitmasks, dp, math, probabilities

The Child and Set

bitmasks, greedy, implementation, sortings

Random Task

binary search, bitmasks, combinatorics, dp, math

Guess the Tree

bitmasks, constructive algorithms, dp, greedy, trees

Sereja and Table

bitmasks, greedy

Cunning Gena

bitmasks, dp, greedy, sortings

2048

bitmasks, dp

Roman and Numbers

bitmasks, brute force, combinatorics, dp, number theory

Inna and Binary Logic

binary search, bitmasks, data structures

Fox and Minimal path

bitmasks, constructive algorithms, graphs, implementation, math

Bear and Floodlight

bitmasks, dp, geometry

New Year Letter

bitmasks, brute force, dp

Captains Mode

bitmasks, dp, games

Circling Round Treasures

bitmasks, shortest paths

Sereja and Sets

bitmasks, dfs and similar

Bags and Coins

bitmasks, constructive algorithms, dp, greedy

Game with Strings

bitmasks, dp, games

Xenia and Dominoes

bitmasks, dfs and similar, dp

Vasily the Bear and Painting Square

bitmasks, combinatorics, dp, implementation

Summer Earnings

binary search, bitmasks, brute force, geometry, sortings

Characteristics of Rectangles

binary search, bitmasks, brute force, implementation, sortings

Axis Walking

bitmasks, combinatorics, constructive algorithms, dp, meet-in-the-middle

Memory for Arrays

binary search, bitmasks, greedy

Network Mask

*special problem, bitmasks, brute force, implementation

Permutation Sum

bitmasks, combinatorics, dp, implementation, meet-in-the-middle

Sausage Maximization

bitmasks, data structures, trees

The Minimum Number of Variables

bitmasks, dp

Little Girl and Maximum XOR

bitmasks, dp, greedy, implementation, math

Two Sets

bitmasks, math

Undoubtedly Lucky Numbers

bitmasks, brute force, dfs and similar

The Brand New Function

bitmasks

XOR on Segment

bitmasks, data structures

Friends

binary search, bitmasks, data structures, math

Quick Tortoise

bitmasks, divide and conquer, dp

Table

bitmasks, combinatorics, dp, math

Snake

bitmasks, dfs and similar, graphs, implementation

Array

bitmasks, implementation, two pointers

Bitonix' Patrol

bitmasks, brute force, combinatorics, dfs and similar, math

Polycarpus is Looking for Good Substrings

bitmasks, hashing, implementation

LLPS

binary search, bitmasks, brute force, greedy, implementation, strings

Brand New Problem

bitmasks, brute force, dp

Compatible Numbers

bitmasks, brute force, dfs and similar, dp

Garden

bitmasks, dp, graphs, trees

PFAST Inc.

bitmasks, brute force, graphs

Petya and Spiders

bitmasks, dp, dsu

Arrangement

bitmasks, dp

Robot in Basement

bitmasks, brute force, implementation

Lucky Numbers (easy)

binary search, bitmasks, brute force

Two Subsequences

bitmasks, dp

Password

bitmasks, dp, shortest paths

Mutation

bitmasks, dp, math

Nuclear Fusion

bitmasks, dp

Sweets Game

bitmasks, dfs and similar, dp, games, implementation

Dead Ends

bitmasks, dp

Tournament

bitmasks, brute force, dfs and similar, greedy

Traveling Graph

bitmasks, graph matchings, graphs

Fish

bitmasks, dp, probabilities

A Simple Task

bitmasks, dp, graphs

Looking for Order

bitmasks, dp