ID NAME QUALITY USERS ACC % DIFFICULTY C I
30785 Ada and Apple   11 111
31
26
32952 Ada and Football   2 69
50
42
32223 Ada and Lychees   3 10
42
26
28449 Ada and List   8 248
13
19
32856 Ada and Contact   1 21
30760 Ada and Travelling Salesman   17 152
24
29
15454 How to Handle the Fans   36 1400
11
11
5832 AND Rounds   49 1619
17
20
27379 Unique Code   19 102
20
20
61 Brackets   172 4752
19
20
14742 Building Bridges(HARD)   10 380
14
17
6168 Building Bridges   26 1516
11
16
23742 Dolan and Nephews   4 42
30
27
33019 Catering Contracts   7 76
23
27
12563 Halt The War   6 330
20
19
13015 Counting Primes   31 1012
16
15
7296 Trees Again   5 159
21
30
9722 Insertion Sort   25 3193
12
12
5296 Air Combat   54
10628 Count on a tree   55 1628
33
32
10707 Count on a tree II   51 1471
32
33
11414 Combat on a tree   3 123
30
34
11482 Count on a trie   39
42
50
16245 Living with Courage   18 523
9
14
1108 Card Trick   62 1961
21
24
10810 Its a Murder!   52 2156
15
17
3978 Distance Query   57 1202
23
21
3267 D-query   412 8857
19
23
9577 Dynamic Tree Connectivity   10 368
30
25
1684 Frequent values   107 3201
20
20
18185 Give Away   25 533
22
20
11985 Gao on a tree   23 463
29
26
12005 Grass Planting   6 253
37
17
1043 Can you answer these queries I   545 10716
25
24
1557 Can you answer these queries II   21 983
30
36
1716 Can you answer these queries III   216 7794
22
21
2713 Can you answer these queries IV   57 2039
21
21
2916 Can you answer these queries V   44 1779
22
23
4487 Can you answer these queries VI   22 895
34
30
6779 Can you answer these queries VII   13 538
39
26
19543 Can you answer these queries VIII   8 93
36
38
132 Help R2-D2!   12 723
22
18
12210 High and Low   61
8002 Horrible Queries   373 9579
20
18
18247 Arrangement Validity   10 179
17
23
18248 Maggu’s Solar Panels   1 39
34
34
26721 I LOVE Kd-TREES III   4 65
34
34
37375 Kingdom of Equality   2 6
34
34
3693 Maximum Sum   55 5788
20
18
8985 Line up   17 341
17
17

#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