Zimpha Fan Club

fft, greedy, math, strings

Again Counting Arrays (Easy Version)

combinatorics, dp, fft, math

Yet Yet Another Permutation Problem

divide and conquer, fft, math

Short Permutation Problem

combinatorics, dp, fft, math

Cyclic Hamming (Hard Version)

brute force, dp, fft, math, number theory

Cyclic Hamming (Easy Version)

brute force, divide and conquer, dp, fft, math, number theory

PermuTree (hard version)

bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees

Swimmers in the Pool

dp, fft, math, number theory

Timber

combinatorics, dp, fft, math

Graph Coloring (hard version)

brute force, combinatorics, divide and conquer, dp, fft, graphs

Game of Questions

bitmasks, combinatorics, dp, fft, math, probabilities

Koxia and Bracket

divide and conquer, fft, math

Function Sum

brute force, combinatorics, dp, fft, math

Almost Perfect

combinatorics, fft, math

Multiset of Strings

bitmasks, brute force, dp, fft, flows, graphs, math, meet-in-the-middle, trees

Game of AI (hard version)

combinatorics, fft, math

Game of AI (easy version)

combinatorics, constructive algorithms, dp, fft, math

Mio and Lucky Array

constructive algorithms, fft, math, strings

Koishi's Unconscious Permutation

fft, math

Permutation Counting

brute force, combinatorics, dp, fft, math

Centroid Probabilities

combinatorics, dp, fft, math

Three Minimums

combinatorics, constructive algorithms, divide and conquer, dp, fft, math

Basis

combinatorics, fft, math, number theory

Special Positions

combinatorics, divide and conquer, fft, math

Tree Coloring

combinatorics, divide and conquer, fft

Dominoes

combinatorics, fft, graphs, math, number theory

Problems for Codeforces

combinatorics, fft, math

Cyclic Sum

data structures, fft, number theory

Occurrences

combinatorics, dfs and similar, dp, dsu, fft, graphs

Mocha and Stars

combinatorics, dp, fft, math, number theory

Stairs

combinatorics, divide and conquer, dp, fft, math

The Three Little Pigs

combinatorics, dp, fft, math

Abnormal Permutation Pairs (hard version)

combinatorics, dp, fft, math

Abnormal Permutation Pairs (easy version)

combinatorics, dp, fft, math

Omkar and Akmar

chinese remainder theorem, combinatorics, constructive algorithms, fft, games, geometry, math, meet-in-the-middle, string suffix structures

AmShZ Farm

combinatorics, fft, math

Flower Shop

*special problem, data structures, fft, math

String Counting

combinatorics, dp, fft, math

School Clubs

dp, fft, math, number theory, probabilities

Nezzar and Chocolate Bars

combinatorics, fft, math, probabilities

Tiles

combinatorics, dp, fft, math

Multithreading (Easy Version)

combinatorics, fft, math

INOI Final Contests

combinatorics, dp, fft

Engineer Artem

2-sat, chinese remainder theorem, constructive algorithms, fft, flows

Clusterization Counting

combinatorics, dp, dsu, fft, graphs, trees

Running Competition

bitmasks, fft, math, number theory

Kevin and Grid

fft, graphs, math

Slime and Sequences (Hard Version)

dp, fft, math

Slime and Sequences (Easy Version)

dp, fft, math

Placing Rooks

combinatorics, fft, math

Substring Search

bitmasks, brute force, fft

Harry The Potter

brute force, constructive algorithms, dp, fft, implementation, math

Xor on Figures

constructive algorithms, fft, math

Divisor Set

divide and conquer, fft, greedy, math, number theory

Red-White Fence

combinatorics, fft

Product Tuples

divide and conquer, fft

Xor Spanning Tree

divide and conquer, fft, graphs

Heidi Learns Hashing (Hard)

fft, math, number theory

Triple

fft, math

Pavel and Triangles

brute force, dp, fft, greedy, ternary search

Radix sum

fft, math, number theory

Lucky Tickets

divide and conquer, dp, fft

Epic Convolution

chinese remainder theorem, fft, math, number theory

Covered Points

fft, geometry, number theory

Boolean Computer

bitmasks, brute force, fft, math

Tree

fft, graphs, trees

Nikita and Order Statistics

chinese remainder theorem, fft, math

Perfect Encoding

fft, math

K Paths

combinatorics, data structures, dp, fft, math

Bandit Blues

combinatorics, dp, fft, math

Lightsabers (hard)

fft

Yet Another String Matching Problem

fft, math

Perpetual Subtraction

fft, math, matrices

Sum the Fibonacci

bitmasks, divide and conquer, dp, fft, math

Cyclic Cipher

fft, math

Random Elections

bitmasks, brute force, divide and conquer, fft, math

Days of Floral Colours

combinatorics, divide and conquer, dp, fft, math

Rusty String

fft, math, strings

Test Data Generation

combinatorics, divide and conquer, dp, fft, math, number theory

PolandBall and Many Other Balls

combinatorics, divide and conquer, dp, fft, math, number theory

Dasha and cyclic table

bitmasks, brute force, fft, strings, trees

Complete the Permutations

combinatorics, fft, graphs, math

Binary Table

bitmasks, brute force, divide and conquer, dp, fft, math

Thief in a Shop

divide and conquer, dp, fft, math

Transforming Sequence

combinatorics, dp, fft, math

Kyoya and Train

dp, fft, graphs, math, probabilities

Fuzzy Search

bitmasks, brute force, fft

Design Tutorial: Increase the Constraints

bitmasks, data structures, fft

The Child and Binary Tree

combinatorics, divide and conquer, fft, number theory

Painting Square

dp, fft

Ladies' Shop

constructive algorithms, fft, math