ID NAME QUALITY USERS ACC % DIFFICULTY C I
30785 Ada and Apple   11 115
31
26
32952 Ada and Football   2 71
50
42
32223 Ada and Lychees   3 10
42
26
28449 Ada and List   8 254
12
17
32856 Ada and Contact   1 21
30760 Ada and Travelling Salesman   17 153
24
29
15454 How to Handle the Fans   36 1414
11
11
5832 AND Rounds   49 1636
17
20
27379 Unique Code   19 105
20
20
61 Brackets   173 4824
19
20
14742 Building Bridges(HARD)   10 411
14
17
6168 Building Bridges   26 1537
11
16
23742 Dolan and Nephews   4 42
30
27
33019 Catering Contracts   7 77
23
27
12563 Halt The War   6 339
20
19
13015 Counting Primes   31 1029
16
15
7296 Trees Again   5 161
21
30
9722 Insertion Sort   26 3267
13
12
5296 Air Combat   54
10628 Count on a tree   56 1674
33
32
10707 Count on a tree II   52 1583
32
33
11414 Combat on a tree   3 132
30
34
11482 Count on a trie   39
42
50
16245 Living with Courage   18 527
9
13
1108 Card Trick   63 1990
21
24
10810 Its a Murder!   52 2184
15
16
3978 Distance Query   58 1254
24
20
3267 D-query   420 9224
20
23
9577 Dynamic Tree Connectivity   10 384
30
25
1684 Frequent values   109 3262
20
21
18185 Give Away   25 568
22
20
11985 Gao on a tree   21 489
29
26
12005 Grass Planting   7 298
34
17
1043 Can you answer these queries I   546 10999
25
24
1557 Can you answer these queries II   21 1032
30
36
1716 Can you answer these queries III   219 8047
22
21
2713 Can you answer these queries IV   59 2189
21
21
2916 Can you answer these queries V   45 1868
22
23
4487 Can you answer these queries VI   22 924
33
29
6779 Can you answer these queries VII   13 585
39
26
19543 Can you answer these queries VIII   8 101
36
38
132 Help R2-D2!   12 727
20
17
12210 High and Low   61
8002 Horrible Queries   375 9716
20
18
18247 Arrangement Validity   10 186
17
23
18248 Maggu’s Solar Panels   1 39
34
34
26721 I LOVE Kd-TREES III   4 66
34
34
37375 Kingdom of Equality   2 6
34
34
3693 Maximum Sum   55 5856
20
18
8985 Line up   18 357
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