Problems
The sum#2307
Easy · Segment Tree
Stars#2308
Very easy · Data Structures · Prefix Sums
Windows#2309
Easy · Sorting · Implementation
And again the sum...#2310
Very easy · Data Structures
Matrix#2311
Very hard · Greedy algorithms
Height of the Tree#2312
Easy · Trees
Number of elements#2313
Very easy · Trees · Graphs
Second Maximum#2314
Very easy · Trees
Permutations (Easy)#2315
Very easy · Brute force
Print leaves#2316
Very easy · Trees
LCA offline (Easy)#2317
Easy · Trees
LCA Problem Revisited (Easy)#2318
Very easy · Graphs · Data Structures
Rectangles Online (Easy)#2319
Easy · Brute force
Refrain (Easy)#2320
Medium · Brute force · Prefix Sums
Sorting#2321
Very easy · Sorting
Columns#2322
Easy · Implementation
Numbers from digits#2323
Very easy · Implementation
Scatter#2324
Very easy · Sorting
Two numbers#2325
Easy · Sorting
Socks#2326
Very easy · Prefix Sums
Counting sort#2327
Very easy · Sorting
Degree numbers#2328
Easy · Brute force · Math
Bell#2329
Very easy · Sorting
Strip 2#2330
Medium · Implementation
Balance of parentheses#2331
Very easy · Brute force · Strings