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: 2801
Success rate: 53.10%
Square Queries
LOJ-1081
Medium Hard
Solved by: 510
Success rate: 31.99%
Array Queries
LOJ-1082
Easy
Solved by: 4462
Success rate: 57.94%
Histogram
LOJ-1083
Medium
Solved by: 1951
Success rate: 57.42%
All Possible Increasing Subsequences
LOJ-1085
Medium
Solved by: 1432
Success rate: 41.67%
Diablo
LOJ-1087
Medium
Solved by: 1556
Success rate: 44.21%
Points in Segments (II)
LOJ-1089
Medium
Solved by: 1302
Success rate: 38.27%
Ghajini
LOJ-1093
Medium
Solved by: 1786
Success rate: 59.84%
Lucky Number
LOJ-1097
Medium
Solved by: 830
Success rate: 73.82%
A Secret Mission
LOJ-1101
Medium Hard
Solved by: 708
Success rate: 36.14%
Castle Walls
LOJ-1103
Medium Hard
Solved by: 318
Success rate: 49.14%
Curious Robin Hood
LOJ-1112
Easy
Solved by: 4085
Success rate: 50.54%
Discover the Web
LOJ-1113
Easy
Solved by: 3772
Success rate: 45.34%
Easily Readable
LOJ-1114
Medium
Solved by: 875
Success rate: 30.29%
Rectangle Union
LOJ-1120
Medium Hard
Solved by: 344
Success rate: 40.06%
Greatest Parent
LOJ-1128
Medium Hard
Solved by: 644
Success rate: 56.33%
Consistency Checker
LOJ-1129
Medium
Solved by: 1614
Success rate: 36.96%
Count the Multiples of 3
LOJ-1135
Medium
Solved by: 1232
Success rate: 44.46%
Min Max Roads
LOJ-1162
Medium Hard
Solved by: 655
Success rate: 47.45%
Horrible Queries
LOJ-1164
Medium
Solved by: 1890
Success rate: 36.28%
Computing Fast Average
LOJ-1183
Medium
Solved by: 1134
Success rate: 43.63%
Lining up Students
LOJ-1187
Medium Hard
Solved by: 609
Success rate: 63.10%
Fast Queries
LOJ-1188
Medium
Solved by: 1090
Success rate: 42.95%
Weird Advertisement
LOJ-1204
Hard
Solved by: 84
Success rate: 32.28%
Posters for Election
LOJ-1207
Medium
Solved by: 832
Success rate: 47.22%
Double Ended Queue
LOJ-1212
Easy
Solved by: 3331
Success rate: 46.81%
DNA Prefix
LOJ-1224
Medium
Solved by: 1365
Success rate: 45.54%
Points in Rectangle
LOJ-1266
Medium Hard
Solved by: 889
Success rate: 44.36%
Points in Rectangle (II)
LOJ-1267
Hard
Solved by: 133
Success rate: 35.85%
Consecutive Sum
LOJ-1269
Medium Hard
Solved by: 584
Success rate: 47.50%
Document Analyzer
LOJ-1293
Hard
Solved by: 137
Success rate: 57.69%
Ferris Wheel
LOJ-1303
Medium Hard
Solved by: 481
Success rate: 59.77%
Strongest Community
LOJ-1339
Medium Hard
Solved by: 651
Success rate: 46.08%
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: 887
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: 175
Success rate: 30.37%
Olympic Swimming
LOJ-1423
Hard
Solved by: 92
Success rate: 34.90%
New Land
LOJ-1424
Medium Hard
Solved by: 454
Success rate: 57.85%
Blind Escape
LOJ-1426
Hard
Solved by: 68
Success rate: 34.25%
Tree Flip
Solved by: 3
Success rate: 9.09%