Problems
Tax#662
Very easy · Implementation
Game#663
Easy · Greedy algorithms · Sorting · Implementation
Construction of the School#664
Easy · Greedy algorithms · Implementation
Wallpapering#665
Medium · Geometry · Optimization
Triangle and point#666
Very easy · Geometry
Circle and Triangle#667
Hard · Geometry
Buses and airplanes#668
Medium · Graphs
Turtle#669
Medium · Binary Search · Implementation
Searching for Palindromes#670
Very easy · Strings · String suffix structures
Picky children#671
Hard · Greedy algorithms
Quadroquadratures#672
Medium · Math · Implementation
Kingdom#673
Hard · Graphs
Weather conditions#674
Easy · Graphs
Move the matchstick#675
Medium · Implementation
Vectors#676
Easy · Graphs
Chocolate bars#677
Easy · Dynamic programming
Employees#678
Easy · Combinatorics
Robot#679
Easy · Dynamic programming · Data Structures
Hall Round Table#680
Easy · Geometry · Implementation
Fibonacci Numbers#681
Hard · Dynamic programming · Implementation
Sum on a segment#682
Very easy · Prefix Sums
Partial matrix sum#683
Easy · Prefix Sums · Implementation
Sum in a matrix#684
Very easy · Prefix Sums
Sum on parallelepiped#685
Easy · Prefix Sums
Next#686
Very easy · Data Structures · Implementation