ID NAME QUALITY USERS ACC % DIFFICULTY C I
30500 THE HONEYCOMB MAZE   10 289
16
16
5151 Alice‚Äôs Cube   7 458
26
23
4556 Think I will Buy Me a Football Team   23 1910
6
11
780 The Archipelago   -1 21
50
42
3377 A Bug’s Life   184 7400
13
13
34483 Connected country   1 37
34409 Disconnected country   9
3978 Distance Query   23 687
22
21
30116 Can you draw it or not?   8 110
5
6
1674 The Explosion   146
3133 Here We Go(relians) Again   3 145
12
12
11839 Graphic Sequence   43
26
34
6256 Inversion Count   359 10645
16
18
2670 Count Minimum Spanning Trees   3 133
26
42
4839 Ant   2 177
26
34
215 Panic in the Plazas   77
5732 Paradox   28 999
17
19
6288 Treeramids   8 890
22
17
913 Query on a tree II   71 2893
24
22
3724 Rainbow Ride   6 445
19
19
3405 Almost Shortest Path   56 1335
22
21
3643 Traffic Network   57 1518
19
21
23132 Travelling cost   27 1043
10
8
34565 Tetrahedrons in the country   2 12
17
17
18458 Very Friends 2   4 27
23
23
18457 Very Friends   6 206
11
30
666 Con-Junctions   26 711
15
20
41 Play on Words   32 2413
22
25
6294 Yodaness Level   51 2646
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