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