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