ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   29 371
22
21
30735 Ada and Island   17 461
13
13
21326 Akbar , The great   63 2525
21
18
30500 THE HONEYCOMB MAZE   16 638
17
15
10283 ALL IZZ WELL   69 3462
17
14
372 The Benefactor   48 3053
12
13
3377 A Bug’s Life   342 15489
12
13
10380 prayatna PR   86 5248
6
6
34373 Clickbait   8 22
32
19
27182 Easy modified sudoku   4 301
17
12
9126 Time to live   48 2030
12
15
12183 Help the Commander in Chief   46 909
15
16
38 Labyrinth   98 5318
18
16
30827 THE LAST SHOT   9 653
9
7
1436 Is it a tree   338 20684
10
10
1437 Longest path in a tree   407 19657
14
15
20775 Roger and tree   22 330
17
22
13745 Crack the Safe   19 606
14
13
17732 Salary Management   10 229
22
24
34648 Seven   5 41
11
21
16277 Little Red-Cap   4 221
24
24
18532 Tree _order   41 1196
15
10
1696 Will Indiana Jones Get There   2 123
28
23

#dfs

depth-first search

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