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Hot problems
CCC '21 J3 - Secret Instructions
Problem
Category
Points ▾
AC %
Users
CCO '15 P5 - Timpanist
CCO
20p
36.5%
102
CCOQR '16 - Through A Maze Darkly
CCC
20p
18.4%
104
CCO Preparation Test 6 P1 - Bus Routes
Mock CCO
20p
24.2%
6
CCO Preparation Test 6 P3 - HopScotch
Mock CCO
20p
23.1%
140
CCO Preparation Test 7 P1 - Game of Stone
Mock CCO
20p
6.4%
3
CCO Preparation Test 7 P2 - XOR Path
Mock CCO
20p
13.5%
16
Mock CCO '17 Problem 3 - Connection
Mock CCO
20p
12.5%
38
Mock CCO '17 Problem 6 - Dire Consequences
Mock CCO
20
24.2%
25
CCO '17 P2 - Cartesian Conquest
CCO
20p
9.4%
55
CCO '17 P4 - Rainfall Storage
CCO
20p
36.2%
177
CCO '17 P5 - Professional Network
CCO
20p
32.6%
167
Mock CCO '18 Contest 1 Problem 5 - A Counting Problem
Mock CCO
20p
24.5%
9
Mock CCO '18 Contest 2 Problem 2 - Victor Rains
Mock CCO
20p
27.7%
21
Mock CCO '18 Contest 2 Problem 3 - Victor Trains
Mock CCO
20p
14.0%
7
Mock CCO '18 Contest 2 Problem 4 - Victor's Rectangles
Mock CCO
20p
21.9%
22
Mock CCO '18 Contest 2 Problem 5 - Victor's Triangles
Mock CCO
20p
33.2%
49
Mock CCO '18 Contest 2 Problem 6 - Victor's Cubes
Mock CCO
20p
18.3%
9
Mock CCO '18 Contest 3 Problem 2 - Roger Delegates Work to Jessica
Mock CCO
20p
28.9%
23
Mock CCO '18 Contest 3 Problem 3 - Roger Just Plays Some More Chess
Mock CCO
20p
12.3%
33
Mock CCO '18 Contest 4 Problem 5 - Spawn More Overlords
Mock CCO
20p
24.8%
35
CCO '18 P5 - Boring Lectures
CCO
20p
19.2%
127
CCO '09 P1 - Invasion of the Boxes
CCO
20p
12.8%
22
CCO '09 P2 - Dinner
CCO
20p
9.8%
50
CCO '09 P4 - Bottle Caps
CCO
20p
14.5%
39
CCO '19 P2 - Sirtet
CCO
20p
23.6%
85
CCO '19 P6 - Bad Codes
CCO
20p
25.6%
69
CCO '03 P3 - Cube
CCO
20p
12.4%
14
CCO '05 P2 - The Great Spamway Strike
CCO
20
40.2%
43
CCO '03 P6 - Cheap Gas
CCO
20p
13.1%
79
CCO '21 P5 - Bread First Search
CCO
20p
23.0%
63
CCO '05 P3 - That's News To Me
CCO
20
0.0%
0
CCO '22 P4 - Bi-ing Lottery Treekets
CCO
20p
20.5%
30
CCO '22 P5 - Phone Plans
CCO
20p
12.8%
33
The Contest Contest 1 P5 - A Typical CCO Problem
Uncategorized
20p
4.2%
24
CCO '14 P3 - Werewolf
CCO
17p
42.1%
194
CCO Preparation Test 1 P3 - K-th Rank Student
Mock CCO
17p
34.6%
154
CCO Preparation Test 2 P1 - Concatenation
Mock CCO
17p
13.1%
32
Mock CCO '17 Problem 2 - Penetrating Power
Mock CCO
17p
25.7%
171
Mock CCO '17 Problem 5 - Blitzkrieg
Mock CCO
17p
12.4%
13
CCO '09 P5 - Parade
CCO
17p
17.3%
43
CCO '08 P3 - Mobile
CCO
17p
31.3%
46
CCO '21 P1 - Swap Swap Sort
CCO
17p
16.5%
152
CCO '21 P2 - Weird Numeral System
CCO
17p
12.1%
87
CCO '22 P2 - Rainy Markets
CCO
17p
18.6%
104
CCO '23 P2 - Real Mountains
CCO
17p
13.2%
69
CCO '23 P4 - Flip it and Stick it
CCO
17p
6.8%
54
CCO '10 P2 - Tree Pruning
CCO
15
29.9%
188
CCO '10 P3 - Wowow
CCO
15p
23.9%
282
CCO '10 P5 - Space Miner
CCO
15
31.5%
52
CCO '11 P2 - Vampire Tunnels
CCO
15p
19.0%
320
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