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Random
Hot problems
CCC '24 J4 - Troublesome Keys
CCC '24 S2 - Heavy-Light Composition
CCC '19 J3 - Cold Compress
COCI '22 Contest 4 #1 7Krokods
CCC '24 J5 - Harvest Waterloo
CCC '08 S4 - Twenty-four
CCC '24 S3 - Swipe
Problem
Category
Points
AC %
Users
Mock CCC '22 Contest 1 J2 - Biking and Hiking
Mock CCC
3
35.0%
529
Mock CCC '22 Contest 1 J3 - String Crossing Maximization
Mock CCC
7p
12.7%
244
Mock CCC '22 Contest 1 J4 - Snowball Fight
Mock CCC
5p
16.7%
238
Mock CCC '22 Contest 1 J5 - New Year's Restrictions
Mock CCC
7p
25.0%
143
Mock CCC '22 Contest 2 J1 - Opening Ceremony
Mock CCC
3
49.4%
691
Mock CCC '22 Contest 2 J2 - Snowboarding Championship
Mock CCC
3
35.7%
562
Mock CCC '22 Contest 2 J3 - Figure Skating Fun
Mock CCC
5p
30.0%
467
Mock CCC '22 Contest 2 J4 - Hockey Bracket
Mock CCC
7p
18.4%
194
Mock CCC '22 Contest 2 J5 - Dominating the Olympics
Mock CCC
10
16.4%
76
Mock CCC '23 Contest 1 J1 - Final Velocity
Mock CCC
3
67.1%
723
Mock CCC '23 Contest 1 J2 - Healthy Schedule
Mock CCC
3
38.6%
556
Mock CCC '23 Contest 1 J3 - Pairing Gifts
Mock CCC
5p
12.5%
242
Mock CCC '23 Contest 1 J4 - String Decryption
Mock CCC
5p
17.1%
165
Mock CCC '23 Contest 1 J5 - Calculus Problem
Mock CCC
12p
10.1%
41
Mock CCC '24 Contest 1 J1 - Lemon Bathtub
Mock CCC
3
61.0%
440
Mock CCC '24 Contest 1 J2 - Simple Elo Rating System
Mock CCC
3
35.7%
222
Mock CCC '24 Contest 1 J3 - RGB Words
Mock CCC
5p
13.1%
185
Mock CCC '24 Contest 1 J5 - Mathland
Mock CCC
10p
7.8%
33
Mock CCC '24 Contest 1 J4/S1 - Magical Magnetic Marbles
Mock CCC
5p
11.6%
254
Mock CCC '24 Contest 1 S2 - Owen the Toucan
Mock CCC
7p
33.2%
188
Mock CCC '24 Contest 1 S3 - Optimal Split Point
Mock CCC
10p
3.1%
21
Mock CCC '24 Contest 1 S4 - Tommy's Lemonade Stand
Mock CCC
12p
22.0%
29
Mock CCC '24 Contest 1 S5 - Mock CCC 2025
Mock CCC
20p
14.2%
18
Mock CCO '17 Problem 1 - Fast Fuhrer Transform
Mock CCO
10p
25.4%
60
Mock CCO '17 Problem 2 - Penetrating Power
Mock CCO
17p
25.5%
168
Mock CCO '17 Problem 3 - Connection
Mock CCO
20p
12.5%
38
Mock CCO '17 Problem 4 - Guards
Mock CCO
15p
17.2%
52
Mock CCO '17 Problem 5 - Blitzkrieg
Mock CCO
17p
12.4%
13
Mock CCO '17 Problem 6 - Dire Consequences
Mock CCO
20
24.2%
25
Mock CCO '19 Contest 1 Problem 4 - A Chemistry Problem
Mock CCO
15p
14.9%
13
Mock CCO '19 Contest 1 Problem 5 - A Tree Problem
Mock CCO
25p
14.3%
6
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem
Mock CCO
15p
27.2%
16
Mock CCO '19 Contest 2 Problem 1 - A Dynamic Connectivity Problem
Mock CCO
15p
32.4%
65
Mock CCO '19 Contest 2 Problem 2 - A Simulation Problem
Mock CCO
15p
10.7%
8
Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem
Mock CCO
15p
5.5%
5
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem
Mock CCO
5p
9.9%
6
Mock CCO '19 Contest 2 Problem 5 - A Geometry Problem
Mock CCO
12p
4.3%
2
Mock CCO '19 Contest 2 Problem 6 - A Fundraising Problem
Mock CCO
12p
15.8%
28
MCIPC Contest 1 P1 - Factoring
Uncategorized
3
25.5%
78
MCIPC Contest 1 P2 - Infinite Chessboard
Uncategorized
3
48.7%
73
MCIPC Contest 1 P1 - Cypher
Uncategorized
5p
38.0%
46
MCIPC Contest 1 P4 - Snack Line
Uncategorized
7p
14.5%
14
MCIPC Contest 1 P5 - Rainwater
Uncategorized
7
23.0%
17
MCIPC Contest 2 P1 - Super Mega Snowball
Uncategorized
3
36.6%
42
MCIPC Contest 2 P2 - Icicles
Uncategorized
3
40.7%
50
MCIPC Contest 2 P3 - Snowy Streets
Uncategorized
5p
28.3%
45
MCIPC Contest 2 P4 - Wreath
Uncategorized
7p
9.6%
8
MCIPC Contest 2 P5 - Holiday Chocolates
Uncategorized
10p
26.0%
7
MCIPC Contest 2 P6 - Block Tower
Uncategorized
12p
11.6%
9
MEC '16 P1 - Bat-Doctor
Seasonal
5p
25.8%
40
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