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