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Random
Hot problems
CCC '21 S2 - Modern Art
COCI '13 Contest 2 #5 Paleta
Arcadia Computing Contest 1 P2 - Chemistry
Arcadia Computing Contest 1 P3 - ScanTron
CCO '07 P2 - Snowflakes
Arcadia Computing Contest 1 P5 - Hacking Grades
Segment Tree Practice 1
Problem
Category
Points
AC %
Users
COI '14 #3 Ogledala
COCI
30p
31.0%
5
COI '14 #4 Sir
COCI
25p
28.1%
10
COI '15 #1 Dijamant
COCI
25p
40.6%
9
COI '15 #2 Palinilap
COCI
25p
23.9%
16
COI '15 #3 Relay
COCI
30p
25.7%
6
COI '15 #4 Torrent
COCI
25p
36.2%
31
COI '16 #1 Ili
COCI
17p
42.9%
3
COI '16 #2 Raspad
COCI
30p
42.9%
3
COI '16 #3 Trapezi
COCI
35p
0.0%
0
COI '16 #4 Zagrade
COCI
25p
29.4%
14
COI '17 #1 Paprike
COCI
12p
53.1%
34
COI '17 #2 Pick
COCI
20p
10.5%
2
COI '17 #3 Svjetlost
COCI
25p
0.0%
0
COI '17 #4 Zagonetka
COCI
17p
3.1%
3
COI '18 #1 Izlet
COCI
30p
0.0%
0
COI '18 #2 Ljepotica
COCI
15p
28.2%
9
COI '18 #3 Segway
COCI
12p
40.0%
4
COI '18 #4 Tenis
COCI
30p
10.5%
4
COI '19 #1 Paint
COCI
40p
7.9%
12
COI '19 #2 Pastiri
COCI
35p
3.7%
6
COI '19 #3 Semafor
COCI
20p
16.7%
1
COI '19 #4 Zagrade
COCI
15p
23.0%
19
COI '20 #1 Autobahn
COCI
15p
12.3%
29
COI '20 #2 Cigle
COCI
20p
19.4%
25
COI '20 #3 Izvanzemaljci
COCI
25p
0.8%
1
COI '20 #4 MalnaRISC
COCI
20p
2.9%
8
3n+1
Uncategorized
3
39.6%
1743
Comparing Arrays
Uncategorized
15p
16.5%
64
Data Compression
Uncategorized
15p
0.0%
0
Ray's Tricky Connectivity
Uncategorized
10p
22.3%
80
Non-constructive Constant Time Algorithm
Fun Math
20
14.3%
4
Counting Problem
Uncategorized
17
45.5%
5
CPC '19 Contest 1 P0 - Shoes
Uncategorized
3p
56.6%
271
CPC '19 Contest 1 P1 - Distance
Uncategorized
3p
55.7%
343
CPC '19 Contest 1 P2 - Luggage
Uncategorized
7p
27.1%
351
CPC '19 Contest 1 P3 - Admiral Kuznetsov
Uncategorized
12p
16.0%
80
CPC '19 Contest 1 P4 - Sorting Practice
Uncategorized
12p
7.4%
19
CPC '19 Contest 1 P5 - A Puzzlingly Puzzling Puzzle Problem 😎
Uncategorized
17p
8.4%
10
CPC '19 Contest 1 P6 - Maintaining Some Coins
Uncategorized
20p
1.9%
10
CPC '21 Contest 1 P0 - AQT and Alphabet
Uncategorized
3
68.7%
388
CPC '21 Contest 1 P1 - AQT and Fractions
Uncategorized
5p
16.2%
252
CPC '21 Contest 1 P2 - AQT and Multiset
Uncategorized
7p
23.3%
168
CPC '21 Contest 1 P3 - AQT and Circles
Uncategorized
10p
13.6%
107
CPC '21 Contest 1 P4 - AQT and Directed Graph
Uncategorized
12p
30.5%
265
CPC '21 Contest 1 P5 - AQT and Modern Art
Uncategorized
15p
15.8%
45
CPC '21 Contest 1 P6 - AQT's Break Time is Over
Uncategorized
20p
7.2%
26
CPC '21 Contest 1 P7 - AQT and Quarantine
Uncategorized
20p
16.2%
17
COCI '06 Regional #1 Bard
COCI
7
27.4%
299
COCI '06 Regional #2 Tetris
COCI
10
51.6%
40
COCI '06 Regional #3 Firefly
COCI
10
38.1%
238
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