المسائل
Digital Clock#4025
سهل · Implementation · Brute force
Edge Case#4026
متوسط · Combinatorics · Dynamic programming
Guards#4028
سهل · Graphs
Hip To Be Square#4029
سهل · Math · Brute force
Idol#4030
سهل جدًا · 2-SAT
Joint Venture#4031
سهل · Binary Search · Sorting
Key Insight#4032
صعب · Combinatorics · Sorting · Strings
Tram#4033
سهل جدًا · Stacks
Minimum and Maximum in a tree#4034
سهل · Trees · Binary Search
Ice-Cream#4035
متوسط · Binary Search · Greedy algorithms
Pre-Order Traversal of a Tree#4036
سهل جدًا · Binary Search
Merge Sort#4037
سهل · Sorting
Post-Order Traversal of a Tree#4038
سهل جدًا · Binary Search · Trees
Heap it!#4039
سهل جدًا · Data Structures
Factor Trees#4040
سهل جدًا · Sorting · Math
Commercial Calculator#4041
سهل · Greedy algorithms · Priority Queue
Median of Unions#4042
متوسط · Sorting · Binary Search
Roses#4043
صعب · Math
N Queens#4044
متوسط · Brute force
Brackets#4045
صعب جدًا · Dynamic programming
Mobile#4046
صعب جدًا · Binary Search
Peaks#4047
صعب · Graphs · Disjoint set union · Sorting · Greedy algorithms
Fireworks in RightAngleles#4048
صعب جدًا · Greedy algorithms
Melody#4049
صعب جدًا · Dynamic programming
Strategic Game#4050
سهل · Games · Graphs · Depth-first Search