Problems
Sequence#8500
Easy · Dynamic programming
Weed#8501
Easy · Graphs
VaR#8502
Medium · Math · Matrix
Revolution#8503
Very hard · Geometry
Perspective#8504
Very easy · Graph network flows
Palindrome#8505
Hard · Dynamic programming
Game#8506
Medium · Dynamic programming
Triangle#8507
Easy · Dynamic programming
Numbers#8508
Medium · Math · Prime factorization
Jam#8509
Very hard · Dynamic programming · Binary Search · Math · Optimization · Constructive Algorithms
Random#8511
Very hard · Geometry · Probabilities
Puzzle#8512
Easy · Brute force · Implementation
Thief#8513
Easy · Implementation · Optimization
Never mix up your hat!#8514
Easy · Dynamic programming
Homo or Hetero?#8515
Very easy · Implementation
BFFs#8516
Easy · Graphs
Match me if you can#8517
Hard · String suffix structures · Strings
Modulo 11#8518
Easy · Math · Implementation
Sum of even digits#8519
Very easy · Implementation
Conditional statement - 1#8520
Very easy · Implementation
Conditional statement - 2#8521
Very easy · Implementation
Divisibility#8522
Very easy · Implementation
Circle#8523
Very easy · Math
Sum of positives in a matrix#8524
Very easy · Implementation
Even negative numbers in matrix#8525
Very easy · Brute force