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Hot problems
DMOPC '18 Contest 4 P2 - Dr. Henri and Responsibility
CCC '25 S5 - To-Do List
Maximum Sum
CCC '25 J5 - Connecting Territories
UTS Open '21 P4 - Lucky Graph
Longest Increasing Subsequence
CCC '25 S2 - Cryptogram Cracking Club
Problem
Category
Points
AC %
Users
COCI '06 Contest 1 #2 Herman
COCI
5
41.3%
731
COCI '06 Contest 1 #3 Okviri
COCI
5
41.2%
350
COCI '06 Contest 3 #1 Patuljci
COCI
5
60.0%
615
COCI '06 Contest 3 #2 N-puzzle
COCI
5
46.0%
423
COCI '06 Contest 4 #3 Prsteni
COCI
5
58.7%
235
COCI '06 Contest 5 #2 Natrij
COCI
5
35.2%
263
COCI '06 Contest 6 #1 Prase
COCI
5p
58.8%
338
COCI '06 Contest 6 #2 Magija
COCI
5p
59.4%
140
COCI '06 Contest 6 #3 Maraton
COCI
5
27.8%
228
COCI '07 Contest 1 #1 Cetvrta
COCI
5
56.9%
429
COCI '07 Contest 1 #2 PEG
COCI
5
47.8%
161
COCI '07 Contest 3 #3 Tajna
COCI
5
52.5%
201
COCI '07 Contest 4 #1 Vauvau
COCI
5
57.8%
350
COCI '07 Contest 4 #2 Veci
COCI
5
49.2%
455
COCI '07 Contest 4 #3 Lektira
COCI
5
47.9%
218
COCI '07 Contest 5 #2 Pascal
COCI
5
16.1%
204
COCI '07 Contest 6 #1 Parking
COCI
5
53.3%
302
COCI '08 Contest 1 #1 Skocimis
COCI
5
47.8%
509
COCI '08 Contest 1 #2 Ptice
COCI
5
37.4%
1628
COCI '08 Contest 2 #1 Kornislav
COCI
5
46.4%
409
COCI '08 Contest 2 #2 Reseto
COCI
5
45.9%
318
COCI '08 Contest 3 #1 Pet
COCI
5
57.8%
667
COCI '08 Contest 3 #2 Kemija
COCI
5
58.5%
1655
COCI '08 Contest 4 #3 Rot
COCI
5
27.0%
38
COCI '08 Contest 5 #1 Ljesnjak
COCI
5
47.8%
78
COCI '08 Contest 5 #2 Jabuka
COCI
5
24.3%
100
COCI '08 Contest 6 #1 Buka
COCI
5
35.3%
420
COCI '08 Contest 6 #2 Bazen
COCI
5
31.2%
77
COCI '09 Contest 1 #2 Domino
COCI
5
65.8%
423
COCI '09 Contest 2 #2 Rimski
COCI
5
23.8%
103
COCI '09 Contest 3 #2 Slatkisi
COCI
5
46.6%
166
COCI '09 Contest 3 #3 Sort
COCI
5
44.6%
98
COCI '09 Contest 4 #2 Planina
COCI
5
54.8%
148
COCI '09 Contest 5 #2 Cudoviste
COCI
5
59.8%
123
COCI '09 Contest 6 #1 Kajak
COCI
5p
68.4%
98
COCI '09 Contest 6 #2 Natjecanje
COCI
5
26.5%
107
COCI '09 Contest 6 #3 Dosadan
COCI
5
35.0%
51
COCI '09 Contest 7 #1 Spavanac
COCI
5
62.5%
223
COCI '10 Contest 1 #2 Profesor
COCI
5p
38.2%
92
COCI '10 Contest 2 #2 Napor
COCI
5p
28.3%
98
COCI '10 Contest 2 #4 Knjige
COCI
5p
37.6%
24
COCI '10 Contest 3 #3 Ekipa
COCI
5p
29.5%
49
COCI '10 Contest 4 #2 Parket
COCI
5p
52.5%
57
COCI '10 Contest 5 #2 Košarka
COCI
5p
53.8%
31
COCI '10 Contest 5 #3 Brodovi
COCI
5p
43.4%
26
COCI '10 Contest 6 #2 Uspon
COCI
5p
62.7%
60
COCI '10 Contest 6 #3 Razine
COCI
5p
50.9%
77
COCI '10 Contest 7 #2 Kolo
COCI
5p
23.3%
74
COCI '11 Contest 1 #1 Jabuke
COCI
5p
57.8%
46
COCI '11 Contest 2 #1 Najboljih 5
COCI
5p
69.0%
51
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