Problems
Arithmetic Coding#2883
Hard · Math · Binary Search
PreQueL#2887
Hard · Greedy algorithms · Sorting · Strings
Sigma-function on a segment#2888
Easy · Prefix Sums · Math
Autotourism#2889
Very easy · Graphs
Exact degrees#2890
Medium · Math · Binary Search
Spell Check#2891
Very easy · Dynamic programming
Sum of values#2892
Medium · Math
About the Sprite#2893
Easy · Math · Brute force
Suffix array#2894
Very easy · Suffix Array
Arctic Foxes#2895
Very easy · Math · Implementation
Cockroaches#2896
Very hard · Geometry · Greedy algorithms
Arithmetic progression#2897
Easy · Number theory · Brute force
Peaceful Horses#2898
Hard · Bitmasks · Hashing
Four points#2899
Very easy · Geometry
Roman numerals#2900
Easy · Implementation
Stones#2901
Very hard · Games · Dynamic programming · Combinatorics
Two lines#2902
Easy · Brute force
Parking#2903
Very easy · Graphs · Binary Search
Rook Attack#2904
Very easy · Graphs
Light Switching#2905
Medium · Segment Tree
Can you answer these queries - 1#2906
Easy · Segment Tree · Prefix Sums
Can you answer these queries - 3#2907
Very easy · Segment Tree · Queries
SumThem All#2908
Easy · Math · Prefix Sums
Multiples of 3#2909
Easy · Prefix Sums · Segment Tree · Queries
ABCDEF#2910
Very easy · Math · Implementation