ID NAME QUALITY USERS ACC % DIFFICULTY C I
30734 Ada and Orange Tree   30 390
22
21
30735 Ada and Island   17 566
13
13
21326 Akbar , The great   64 2636
21
17
30500 THE HONEYCOMB MAZE   16 645
17
15
10283 ALL IZZ WELL   70 3483
17
14
372 The Benefactor   48 3085
12
13
3377 A Bug’s Life   343 15741
12
13
10380 prayatna PR   86 5293
6
6
34373 Clickbait   8 22
32
19
27182 Easy modified sudoku   4 312
17
12
9126 Time to live   48 2047
12
15
12183 Help the Commander in Chief   46 914
15
16
38 Labyrinth   98 5341
18
16
30827 THE LAST SHOT   9 657
9
7
1436 Is it a tree   338 20998
10
10
1437 Longest path in a tree   407 19997
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   4 222
24
24
18532 Tree _order   41 1229
15
10
1696 Will Indiana Jones Get There   2 125
26
17

#dfs

depth-first search

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