Problems
Bins and balls#9557
Very easy · Combinatorics
Flags#9558
Easy · Dynamic programming · Matrix
Grid with equal xor#9559
Easy · Implementation
Two-dimensional array - input, output#9560
Very easy · Implementation
Largest in each column#9561
Very hard · Implementation · String suffix structures
Sum of subarray elements#9562
Easy · Prefix Sums
Rows with minimal elements#9563
Very easy · Implementation · String suffix structures
Rows with maximum sum#9564
Very easy · Prefix Sums
Minimum among maximums#9565
Hard · String suffix structures · Implementation
Sorting by columns#9566
Very easy · Sorting
Move zero elements to the right#9567
Very easy · Constructive Algorithms
Move zero elements down#9568
Easy · Sorting
Rotate the array clockwise#9569
Easy · Implementation
Reflect relative to the vertical axis of symmetry#9570
Medium · Implementation
The sum of elements of a two-dimensional array#9571
Very easy · Implementation
Number of even elements in a two-dimensional array#9572
Very easy · Implementation
Sum of positive elements in odd rows#9573
Very easy · Implementation
Area of a circle#9575
Very easy · Math
The length of a circle#9576
Very easy · Math
Binary Palindromes#9577
Medium · Bitmasks
Binary Palindromes 2#9578
Very easy · Bitmasks
Lost Bits#9579
Very easy · Bitmasks
Apprentice Learning Trajectory#9580
Medium · Greedy algorithms · Priority Queue · Sorting
Balls of Buma#9581
Very easy · Implementation · Greedy algorithms
Cactus Revenge#9582
Medium · Graphs · Constructive Algorithms