Data Structures

Basic Data Structures

Binary Indexed Tree

Binary Search Tree

Centroid Decomposition

Hashing/Hash Map

Orthogonal Range Search

Queue

Range Minimum Query/Lowest Common Ancestor

Segment Tree/Interval Tree

Stack

Trie Tree

Binary Simulation
LOJ-1080
Easy
Solved by: 2859
Success rate: 52.99%
Square Queries
LOJ-1081
Medium Hard
Solved by: 518
Success rate: 32.12%
Array Queries
LOJ-1082
Easy
Solved by: 4516
Success rate: 57.93%
Histogram
LOJ-1083
Medium
Solved by: 1981
Success rate: 57.39%
All Possible Increasing Subsequences
LOJ-1085
Medium
Solved by: 1437
Success rate: 41.74%
Diablo
LOJ-1087
Medium
Solved by: 1585
Success rate: 44.19%
Points in Segments (II)
LOJ-1089
Medium
Solved by: 1326
Success rate: 38.39%
Ghajini
LOJ-1093
Medium
Solved by: 1806
Success rate: 59.73%
Lucky Number
LOJ-1097
Medium
Solved by: 840
Success rate: 73.94%
A Secret Mission
LOJ-1101
Medium Hard
Solved by: 729
Success rate: 36.44%
Castle Walls
LOJ-1103
Medium Hard
Solved by: 324
Success rate: 49.15%
Curious Robin Hood
LOJ-1112
Easy
Solved by: 4230
Success rate: 50.55%
Discover the Web
LOJ-1113
Easy
Solved by: 3818
Success rate: 45.46%
Easily Readable
LOJ-1114
Medium
Solved by: 901
Success rate: 30.14%
Rectangle Union
LOJ-1120
Medium Hard
Solved by: 349
Success rate: 40.12%
Greatest Parent
LOJ-1128
Medium Hard
Solved by: 648
Success rate: 56.36%
Consistency Checker
LOJ-1129
Medium
Solved by: 1634
Success rate: 36.88%
Count the Multiples of 3
LOJ-1135
Medium
Solved by: 1242
Success rate: 44.48%
Min Max Roads
LOJ-1162
Medium Hard
Solved by: 680
Success rate: 46.47%
Horrible Queries
LOJ-1164
Medium
Solved by: 1894
Success rate: 36.24%
Computing Fast Average
LOJ-1183
Medium
Solved by: 1134
Success rate: 43.63%
Lining up Students
LOJ-1187
Medium Hard
Solved by: 610
Success rate: 63.12%
Fast Queries
LOJ-1188
Medium
Solved by: 1097
Success rate: 42.72%
Weird Advertisement
LOJ-1204
Hard
Solved by: 84
Success rate: 32.22%
Posters for Election
LOJ-1207
Medium
Solved by: 835
Success rate: 47.26%
Double Ended Queue
LOJ-1212
Easy
Solved by: 3372
Success rate: 46.87%
DNA Prefix
LOJ-1224
Medium
Solved by: 1376
Success rate: 45.57%
Points in Rectangle
LOJ-1266
Medium Hard
Solved by: 913
Success rate: 44.22%
Points in Rectangle (II)
LOJ-1267
Hard
Solved by: 134
Success rate: 35.89%
Consecutive Sum
LOJ-1269
Medium Hard
Solved by: 588
Success rate: 47.45%
Document Analyzer
LOJ-1293
Hard
Solved by: 137
Success rate: 57.69%
Ferris Wheel
LOJ-1303
Medium Hard
Solved by: 482
Success rate: 59.73%
Strongest Community
LOJ-1339
Medium Hard
Solved by: 667
Success rate: 46.14%
Aladdin and the Black Stones
LOJ-1343
Hard
Solved by: 117
Success rate: 43.63%
Aladdin and the Return Journey
LOJ-1348
Medium
Solved by: 903
Success rate: 31.41%
Sabotaging Contest
LOJ-1359
Hard
Solved by: 48
Success rate: 36.97%
Hexagonal Bamboo Fort
LOJ-1372
Hard
Solved by: 83
Success rate: 51.42%
Line Chart
LOJ-1402
Hard
Solved by: 41
Success rate: 30.84%
Rip Van Winkle's Code
LOJ-1411
Hard
Solved by: 183
Success rate: 24.14%
Save the Trees
LOJ-1415
Hard
Solved by: 177
Success rate: 30.46%
Olympic Swimming
LOJ-1423
Hard
Solved by: 92
Success rate: 34.90%
New Land
LOJ-1424
Medium Hard
Solved by: 458
Success rate: 57.61%
Blind Escape
LOJ-1426
Hard
Solved by: 68
Success rate: 34.18%