ID NAME QUALITY USERS ACC % DIFFICULTY C I
30785 Ada and Apple   11 103
31
26
32952 Ada and Football   2 48
50
42
32223 Ada and Lychees   3 10
42
26
28449 Ada and List   8 247
13
19
32856 Ada and Contact   1 21
30760 Ada and Travelling Salesman   17 146
24
29
15454 How to Handle the Fans   35 1370
11
11
5832 AND Rounds   48 1589
17
20
27379 Unique Code   19 101
20
20
61 Brackets   169 4591
18
20
14742 Building Bridges(HARD)   10 368
14
17
6168 Building Bridges   25 1478
11
16
23742 Dolan and Nephews   4 43
30
27
33019 Catering Contracts   6 80
22
26
12563 Halt The War   6 324
20
19
13015 Counting Primes   29 972
15
14
7296 Trees Again   4 158
21
30
9722 Insertion Sort   24 3077
12
12
5296 Air Combat   54
10628 Count on a tree   53 1525
32
32
10707 Count on a tree II   49 1236
32
33
11414 Combat on a tree   3 118
30
34
11482 Count on a trie   47
42
50
16245 Living with Courage   18 520
9
14
1108 Card Trick   60 1913
22
24
10810 Its a Murder!   51 2086
15
17
3978 Distance Query   47 1086
23
20
3267 D-query   389 8077
19
23
9577 Dynamic Tree Connectivity   10 356
30
25
1684 Frequent values   105 3084
20
20
18185 Give Away   19 406
23
20
11985 Gao on a tree   21 431
30
26
12005 Grass Planting   6 236
37
17
1043 Can you answer these queries I   538 10249
25
24
1557 Can you answer these queries II   20 957
30
35
1716 Can you answer these queries III   206 7435
22
21
2713 Can you answer these queries IV   57 1879
21
21
2916 Can you answer these queries V   44 1718
22
23
4487 Can you answer these queries VI   22 867
34
30
6779 Can you answer these queries VII   12 503
39
25
19543 Can you answer these queries VIII   8 93
36
38
132 Help R2-D2!   12 721
22
18
12210 High and Low   61
8002 Horrible Queries   367 9265
20
18
18247 Arrangement Validity   10 179
17
23
18248 Maggu’s Solar Panels   1 39
34
34
26721 I LOVE Kd-TREES III   3 64
34
34
37375 Kingdom of Equality   2 5
34
34
3693 Maximum Sum   52 5643
20
18
8985 Line up   16 333
17
18

#tree

Tree is a data structure that simulates a hierarchical tree structure

https://en.wikipedia.org/wiki/Tree_(data_structure) https://en.wikibooks.org/wiki/Data_Structures/Trees http://www.i-programmer.info/babbages-bag/477-trees.html