Problems

Subscriptions#12285

Easy · Brute force · Greedy algorithms

Garland#12286

Medium · Greedy algorithms · Sorting · Prefix Sums

Foxes and DFS#12287

Very hard · Dynamic programming · Depth-first Search · Trees · Strings

Simple Problem#12288

Very hard · Graphs · Depth-first Search · Dynamic programming · Bitsets

Preparation for the Christmas Holidays#12289

Hard · Combinatorics · Greedy algorithms · Sorting · Trees · Math

Akbar teacher#12290

Very easy · Math

Good array#12291

Easy · Number theory · Greedy algorithms

Hard Game#12292

Medium · Greedy algorithms · Sorting

Captain Jack Sparrow#12293

Medium · Prefix Sums · Bitwise Operations · Math

Pasha and permutations#12294

Hard · Combinatorics · Number theory · Hashing

Haidora and tubes#12295

Easy · Sorting · Greedy algorithms

Haidora and number theory#12296

Medium · Number theory · Math

Haidora and sticks#12297

Easy · Binary Search · Math · Number theory

Haidora or not Haidora?#12298

Hard · Greedy algorithms · Bitmasks · Bitwise Operations

Haidora and strange arrays#12299

Hard · Fast Fourier transform · Number theory · Combinatorics · Prefix Sums

Tall Building#12300

Medium · Greedy algorithms · Sorting

Majestic Segments#12301

Hard · Bitwise Operations · Two pointers · Binary Search

Array Matching#12302

Hard · Greedy algorithms · Hashing · Prefix Sums · Sorting

The F Function#12303

Very hard · Dynamic programming · Math · Number theory · Probabilities

Arrays Connection#12304

Hard · Hashing · Strings · Combinatorics · Number theory

Recover the array#12305

Easy · Prefix Sums

Skyline#12306

Hard · Constructive Algorithms · Greedy algorithms · Math

Minimum Triple#12307

Medium · Combinatorics · Number theory · Graphs

Permutation Fix Sum#12308

Hard · Combinatorics · Number theory · Prefix Sums · Math

Symmetric Construction#12309

Hard · Disjoint set union · Graphs · Constructive Algorithms · Greedy algorithms

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