المسائل
Guardian of Decency#433
صعب · Graphs
Romero’s Dilemma#434
سهل جدًا · Graphs
Prime Path#435
متوسط · Graphs · Breadth-first Search
Intersection#436
صعب · Geometry
Ancestors#437
سهل جدًا · Disjoint set union
XML-converter#438
صعب · Implementation
Brackets#439
سهل · Dynamic programming · Math
Number Puzzle#440
سهل · Brute force · Strings
The most round number#441
سهل جدًا · Implementation
Formations#442
سهل جدًا · Number theory
ICQ#443
سهل جدًا · Sorting
Battleships#444
سهل · Implementation
Excursion#445
صعب · Brute force · Math
Smooth Divisors#446
سهل · Math
Large number#447
صعب · Brute force · Implementation
Chords#448
صعب · Combinatorics
Equal Divisors 2#449
صعب · Math
Spiral#450
سهل · Brute force · Implementation
base64#451
صعب جدًا · Implementation
Shelves#452
متوسط · Sorting
Restaurants#453
صعب · Greedy algorithms · Implementation
Changeling#454
صعب جدًا · Brute force · Implementation
Circular route#455
صعب جدًا · Graphs
Game#456
صعب جدًا · Probabilities
Close numbers#457
متوسط · Data Structures · Binary Search