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Random
Hot problems
COCI '08 Contest 4 #6 Periodni
CCC '24 J4 - Troublesome Keys
CCC '24 S2 - Heavy-Light Composition
COCI '23 Contest 5 #4 Rolete
COCI '23 Contest 5 #1 Zlagalica
APIO '09 P1 - Digging for Oil
COCI '22 Contest 4 #1 7Krokods
Problem
Category
Points
AC %
Users ▴
CCO '06 P3 - Codec
CCO
25p
0.0%
0
CCO '05 P3 - That's News To Me
CCO
20
0.0%
0
CCO '99 P5 - Sum Of Products
CCO
15
4.3%
1
CCO Preparation Test 5 P4 - Toys
Mock CCO
15p
3.1%
2
CCO '97 P3 - Porous Stone
CCO
10
33.3%
2
CCO '98 P3 - Bus Schedule
CCO
12
12.5%
2
CCO '99 P3 - Manelzuma's Revenge
CCO
10
28.6%
2
Mock CCO '19 Contest 2 Problem 5 - A Geometry Problem
Mock CCO
12p
4.3%
2
CCO '07 P4 - Gerrymandering
CCO
20p
1.7%
3
CCO Preparation Test 7 P1 - Game of Stone
Mock CCO
20p
6.4%
3
CCO '97 P4 - High Tide
CCO
10
11.8%
3
CCO '97 P5 - Space Aliens
CCO
10
46.7%
3
CCO '06 P5 - Domino
CCO
30
3.9%
3
CCO '98 P6 - Derek's Dilemma
CCO
12
46.7%
4
CCO Preparation Test 2 P2 - Forest Area
Mock CCO
25p
3.8%
5
Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem
Mock CCO
15p
5.5%
5
CCO '11 P5 - Fixing Disks
CCO
40p
7.7%
6
CCO Preparation Test 6 P1 - Bus Routes
Mock CCO
20p
24.2%
6
CCO '00 P2 - Ransom Note
CCO
12p
7.7%
6
Mock CCO '19 Contest 1 Problem 5 - A Tree Problem
Mock CCO
25p
14.3%
6
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem
Mock CCO
5p
9.9%
6
CCO '04 P3 - S and K
CCO
15p
4.5%
6
Mock CCO '18 Contest 1 Problem 4 - A Rectangle Problem
Mock CCO
25p
17.4%
7
Mock CCO '18 Contest 2 Problem 3 - Victor Trains
Mock CCO
20p
14.0%
7
CCO '00 P6 - Extension Cords
CCO
12
18.0%
7
Mock CCO '18 Contest 3 Problem 5 - Roger Outsources DMOJ Work
Mock CCO
15p
11.2%
8
Mock CCO '18 Contest 3 Problem 6 - Roger Asks For More Marks
Mock CCO
30p
15.5%
8
CCO '98 P4 - Scoring Curling
CCO
7p
25.0%
8
Mock CCO '19 Contest 2 Problem 2 - A Simulation Problem
Mock CCO
15p
10.7%
8
CCO Preparation Test 5 P3 - Minimum Cycle
Mock CCO
15p
9.4%
9
Mock CCO '18 Contest 1 Problem 5 - A Counting Problem
Mock CCO
20p
24.5%
9
Mock CCO '18 Contest 2 Problem 6 - Victor's Cubes
Mock CCO
20p
18.3%
9
CCO '02 P6 - Pit Stop Strategy
CCO
12
52.7%
9
CCO '06 P6 - Paint by Numbers
CCO
30
11.0%
9
CCO '07 P5 - Particle Catcher
CCO
30p
16.3%
10
CCO Preparation Test 1 P1 - Double Cross
Mock CCO
20p
12.1%
10
CCO '99 P6 - Fast Food
CCO
15
34.4%
10
CCO '97 P6 - Aligning DNA
CCO
7
20.6%
11
CCO '00 P3 - The Game Of 31
CCO
15
54.5%
11
CCO '01 P2 - Coke or Chocolate Milk
CCO
12
17.1%
11
CCO '06 P4 - CN Tower 2
CCO
30
5.4%
11
Mock CCO '18 Contest 3 Problem 1 - Roger Meets For DMPG
Mock CCO
15p
9.6%
12
CCO '22 P6 - Good Game
CCO
35p
19.6%
12
CCO '14 P6 - Gates
CCO
40p
9.0%
13
CCO Preparation Test 5 P2 - Corporative Network
Mock CCO
15
7.0%
13
Mock CCO '17 Problem 5 - Blitzkrieg
Mock CCO
17p
12.4%
13
Mock CCO '19 Contest 1 Problem 4 - A Chemistry Problem
Mock CCO
15p
14.9%
13
CCO '21 P6 - Loop Town
CCO
50p
4.7%
13
CCO '03 P3 - Cube
CCO
20p
12.4%
14
CCO '23 P5 - Travelling Trader
CCO
30p
7.0%
14
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