ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   30 393
22
21
30735 Ada and Island   17 579
13
13
21326 Akbar , The great   64 2667
21
17
30500 THE HONEYCOMB MAZE   16 648
17
15
10283 ALL IZZ WELL   70 3486
17
14
372 The Benefactor   49 3087
12
13
3377 A Bug’s Life   343 15797
12
13
10380 prayatna PR   86 5298
6
6
34373 Clickbait   8 24
32
19
27182 Easy modified sudoku   4 314
17
12
9126 Time to live   48 2052
12
15
12183 Help the Commander in Chief   46 914
15
16
38 Labyrinth   98 5349
18
16
30827 THE LAST SHOT   9 658
9
7
1436 Is it a tree   338 21048
10
10
1437 Longest path in a tree   407 20054
14
15
20775 Roger and tree   22 338
17
22
13745 Crack the Safe   19 608
14
13
17732 Salary Management   10 234
22
24
34648 Seven   5 43
11
21
16277 Little Red-Cap   4 225
24
24
18532 Tree _order   41 1244
15
10
1696 Will Indiana Jones Get There   2 128
26
17

#dfs

depth-first search

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