ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   14 158
22
22
30735 Ada and Island   9 146
17
15
21326 Akbar , The great   38 1008
21
17
30500 THE HONEYCOMB MAZE   12 380
16
16
10283 ALL IZZ WELL   61 2912
18
13
372 The Benefactor   39 2491
11
12
3377 A Bug’s Life   233 8558
13
13
10380 prayatna PR   71 3970
6
6
34373 Clickbait   6 17
31
17
27182 Easy modified sudoku   4 200
17
12
9126 Time to live   39 1581
12
15
12183 Help the Commander in Chief   34 656
15
16
38 Labyrinth   70 4260
18
16
30827 THE LAST SHOT   6 501
9
7
1436 Is it a tree   269 12782
10
10
1437 Longest path in a tree   308 11301
14
15
20775 Roger and tree   20 259
16
21
13745 Crack the Safe   15 548
13
13
17732 Salary Management   8 206
23
26
34648 Seven   2 27
17
34
16277 Little Red-Cap   3 200
21
21
18532 Tree _order   36 989
15
11
1696 Will Indiana Jones Get There   1 117
34
34

#dfs

depth-first search

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