ID NAME QUALITY USERS ACC % DIFFICULTY C I
30785 Ada and Apple   12 166
30
25
32952 Ada and Football   2 172
50
42
32223 Ada and Lychees   3 14
42
26
28449 Ada and List   10 303
14
17
32856 Ada and Contact   1 25
30760 Ada and Travelling Salesman   18 174
23
29
15454 How to Handle the Fans   38 1498
11
11
5832 AND Rounds   51 1684
17
20
27379 Unique Code   21 122
20
20
61 Brackets   174 5343
19
20
14742 Building Bridges(HARD)   10 444
14
17
6168 Building Bridges   27 1624
11
17
23742 Dolan and Nephews   5 48
30
27
33019 Catering Contracts   7 86
23
27
12563 Halt The War   8 378
19
19
13015 Counting Primes   32 1264
16
14
7296 Trees Again   5 166
21
30
9722 Insertion Sort   28 3760
12
12
5296 Air Combat   -1 64
34
10628 Count on a tree   61 2185
32
32
10707 Count on a tree II   62 2591
31
31
11414 Combat on a tree   2 206
30
34
11482 Count on a trie   44
42
50
16245 Living with Courage   18 563
9
13
1108 Card Trick   67 2154
21
24
10810 Its a Murder!   53 2338
15
16
3978 Distance Query   67 1577
24
21
3267 D-query   446 11815
19
23
9577 Dynamic Tree Connectivity   12 494
29
28
1684 Frequent values   111 3675
20
21
18185 Give Away   31 942
20
18
11985 Gao on a tree   25 666
27
27
12005 Grass Planting   8 460
34
17
1043 Can you answer these queries I   562 12996
25
24
1557 Can you answer these queries II   23 1426
30
36
1716 Can you answer these queries III   228 10303
22
21
2713 Can you answer these queries IV   59 3448
21
21
2916 Can you answer these queries V   51 2455
23
23
4487 Can you answer these queries VI   25 1161
34
28
6779 Can you answer these queries VII   16 1050
39
28
19543 Can you answer these queries VIII   8 172
37
35
132 Help R2-D2!   12 753
19
16
12210 High and Low   61
8002 Horrible Queries   393 10575
19
18
18247 Arrangement Validity   11 209
17
21
18248 Maggu’s Solar Panels   1 43
34
34
26721 I LOVE Kd-TREES III   4 78
34
34
37375 Kingdom of Equality   2 12
26
26
3693 Maximum Sum   57 6286
19
18
8985 Line up   19 384
16
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