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Regular expressions (Easy)#3181

Örän ýeňil · Strings · Dynamic programming

Regular expressions (Hard)#3182

Kyn · Strings · Dynamic programming

Join#3183

Orta · Sorting · Binary Search · Hashing

Boards (Easy)#3184

Ýeňil · Dynamic programming

Boards (Hard)#3185

Örän ýeňil · Dynamic programming

Invisible point#3186

Örän ýeňil · Binary Search

Calculator#3187

Kyn · Implementation

Miles and kilometers#3188

Örän ýeňil · Dynamic programming

The Triangle#3189

Orta · Dynamic programming

The Primes#3191

Ýeňil · Brute force · Math · Implementation

The Balance#3195

Kyn · Number theory · Math

Make a Sequence#3196

Orta · Brute force

Leaky Cryptography#3197

Kyn · Bitwise Operations · Math · Constructive Algorithms

Pathological Paths#3198

Orta · Trees · Strings

Confusing Login Names#3199

Orta · Dynamic programming · Strings

Dice Puzzle#3200

Ýeňil · Brute force · Implementation

Color the Map#3201

Orta · Graphs

Inherit the Spheres#3202

Örän kyn · Geometry · Depth-first Search · Sorting · Graphs

Crossing Prisms#3203

Orta · Geometry

Array games#3204

Örän kyn · Dynamic programming

Birthday#3205

Kyn · Brute force · Sorting

The Safest Path#3206

Orta · Graphs · Shortest paths

Double Necklace#3207

Örän kyn · Combinatorics · Math

Rabbit Olympics#3208

Örän ýeňil · Greedy algorithms · Sorting

Palindrome#3209

Örän ýeňil · Strings

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