ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   22 222
21
20
30735 Ada and Island   12 230
13
12
21326 Akbar , The great   48 1434
22
18
30500 THE HONEYCOMB MAZE   15 482
17
16
10283 ALL IZZ WELL   67 3139
18
13
372 The Benefactor   42 2734
12
13
3377 A Bug’s Life   308 11268
12
13
10380 prayatna PR   81 4693
6
6
34373 Clickbait   7 22
34
20
27182 Easy modified sudoku   4 225
17
12
9126 Time to live   47 1844
12
15
12183 Help the Commander in Chief   45 832
15
16
38 Labyrinth   90 4601
18
16
30827 THE LAST SHOT   7 575
8
7
1436 Is it a tree   316 15600
10
10
1437 Longest path in a tree   372 14049
14
14
20775 Roger and tree   22 305
17
22
13745 Crack the Safe   17 580
14
13
17732 Salary Management   9 221
22
24
34648 Seven   4 33
9
23
16277 Little Red-Cap   4 211
24
24
18532 Tree _order   39 1084
15
10
1696 Will Indiana Jones Get There   2 119
28
23

#dfs

depth-first search

https://en.wikipedia.org/wiki/Depth-first_search https://www.ics.uci.edu/~eppstein/161/960215.html