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