ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   30 356
22
21
30735 Ada and Island   16 380
13
13
21326 Akbar , The great   63 2362
21
18
30500 THE HONEYCOMB MAZE   16 629
17
15
10283 ALL IZZ WELL   69 3415
17
14
372 The Benefactor   48 3033
12
13
3377 A Bug’s Life   341 15125
12
13
10380 prayatna PR   86 5213
6
6
34373 Clickbait   8 22
32
19
27182 Easy modified sudoku   4 295
17
12
9126 Time to live   48 2020
12
15
12183 Help the Commander in Chief   46 905
15
16
38 Labyrinth   97 5278
17
16
30827 THE LAST SHOT   9 645
9
7
1436 Is it a tree   336 20274
10
10
1437 Longest path in a tree   403 18971
14
15
20775 Roger and tree   22 327
17
22
13745 Crack the Safe   19 607
14
13
17732 Salary Management   10 228
22
24
34648 Seven   4 39
9
23
16277 Little Red-Cap   4 217
24
24
18532 Tree _order   41 1158
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