ID NAME QUALITY USERS ACC % DIFFICULTY C I
30785 Ada and Apple   12 134
30
25
32952 Ada and Football   2 125
50
42
32223 Ada and Lychees   3 11
42
26
28449 Ada and List   9 288
14
17
32856 Ada and Contact   1 22
30760 Ada and Travelling Salesman   18 160
23
29
15454 How to Handle the Fans   37 1470
11
11
5832 AND Rounds   49 1662
17
20
27379 Unique Code   20 115
20
20
61 Brackets   173 5144
19
20
14742 Building Bridges(HARD)   10 426
14
17
6168 Building Bridges   27 1582
11
17
23742 Dolan and Nephews   4 43
30
27
33019 Catering Contracts   7 79
23
27
12563 Halt The War   7 356
19
19
13015 Counting Primes   32 1108
16
14
7296 Trees Again   5 163
21
30
9722 Insertion Sort   28 3505
12
12
5296 Air Combat   55
10628 Count on a tree   61 1893
32
32
10707 Count on a tree II   57 2039
32
32
11414 Combat on a tree   2 171
30
34
11482 Count on a trie   40
42
50
16245 Living with Courage   18 551
9
13
1108 Card Trick   64 2066
22
24
10810 Its a Murder!   53 2291
15
16
3978 Distance Query   65 1412
25
21
3267 D-query   437 10516
19
23
9577 Dynamic Tree Connectivity   11 444
29
26
1684 Frequent values   110 3485
20
21
18185 Give Away   29 759
20
18
11985 Gao on a tree   23 573
27
27
12005 Grass Planting   8 400
34
17
1043 Can you answer these queries I   556 12013
25
24
1557 Can you answer these queries II   22 1232
30
36
1716 Can you answer these queries III   226 9120
22
21
2713 Can you answer these queries IV   59 2884
21
21
2916 Can you answer these queries V   49 2172
23
24
4487 Can you answer these queries VI   25 1055
34
28
6779 Can you answer these queries VII   15 828
39
28
19543 Can you answer these queries VIII   8 145
37
35
132 Help R2-D2!   12 740
20
17
12210 High and Low   61
8002 Horrible Queries   385 10164
20
18
18247 Arrangement Validity   11 197
17
21
18248 Maggu’s Solar Panels   1 39
34
34
26721 I LOVE Kd-TREES III   4 70
34
34
37375 Kingdom of Equality   3 8
26
26
3693 Maximum Sum   56 6107
19
18
8985 Line up   18 370
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