ID NAME QUALITY USERS ACC % DIFFICULTY C I
30500 THE HONEYCOMB MAZE   11 239
16
16
5151 Alice‚Äôs Cube   7 449
26
23
4556 Think I will Buy Me a Football Team   20 1874
7
12
780 The Archipelago   -1 20
50
42
3377 A Bug’s Life   154 6771
14
13
34409 Disconnected country   3
3978 Distance Query   21 618
22
21
30116 Can you draw it or not?   7 99
3
5
1674 The Explosion   145
3133 Here We Go(relians) Again   3 107
12
12
11839 Graphic Sequence   40
26
34
6256 Inversion Count   322 9998
15
18
2670 Count Minimum Spanning Trees   3 125
26
42
4839 Ant   2 176
26
34
215 Panic in the Plazas   77
5732 Paradox   25 958
17
19
6288 Treeramids   8 801
22
17
913 Query on a tree II   59 2707
24
21
3724 Rainbow Ride   6 437
19
19
3405 Almost Shortest Path   48 1246
23
23
3643 Traffic Network   47 1429
19
21
23132 Travelling cost   27 951
10
8
34565 Tetrahedrons in the country   1 6
17
17
18458 Very Friends 2   3 23
23
23
18457 Very Friends   5 194
9
34
666 Con-Junctions   24 681
16
21
41 Play on Words   27 2349
21
26
6294 Yodaness Level   48 2548
15
16

#graph-theory

The problem involves the study of graphs, which are mathematical structures used to model pairwise relations between objects.

https://en.wikipedia.org/wiki/Graph_theory http://primes.utm.edu/graph/ http://pallini.di.uniroma1.it/ - a program which help with generating graphs http://world.mathigon.org/Graph_Theory http://cs.bme.hu/fcs/graphtheory.pdf - Lecture Notes on Graph Theory