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Hot problems
CCC '25 J3 - Product Codes
CCC '25 J4 - Sunny Days
CCC '25 J5 - Connecting Territories
Problem
Category
Points
AC %
Users
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem
Mock CCO
15p
28.3%
19
Mock CCO '19 Contest 2 Problem 1 - A Dynamic Connectivity Problem
Mock CCO
15p
30.9%
71
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
6.1%
7
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem
Mock CCO
5p
13.0%
9
Mock CCO '19 Contest 2 Problem 5 - A Geometry Problem
Mock CCO
12p
6.3%
3
Mock CCO '19 Contest 2 Problem 6 - A Fundraising Problem
Mock CCO
12p
17.1%
36
MCIPC Contest 1 P1 - Factoring
Uncategorized
3
27.8%
92
MCIPC Contest 1 P2 - Infinite Chessboard
Uncategorized
3
50.3%
83
MCIPC Contest 1 P3 - Cypher
Uncategorized
5p
37.2%
60
MCIPC Contest 1 P4 - Snack Line
Uncategorized
7p
14.3%
21
MCIPC Contest 1 P5 - Rainwater
Uncategorized
7
23.6%
21
MCIPC Contest 2 P1 - Super Mega Snowball
Uncategorized
3
41.4%
53
MCIPC Contest 2 P2 - Icicles
Uncategorized
3
40.5%
69
MCIPC Contest 2 P3 - Snowy Streets
Uncategorized
5p
29.8%
57
MCIPC Contest 2 P4 - Wreath
Uncategorized
7p
13.4%
11
MCIPC Contest 2 P5 - Holiday Chocolates
Uncategorized
10p
26.7%
8
MCIPC Contest 2 P6 - Block Tower
Uncategorized
12p
11.6%
9
MEC '16 P1 - Bat-Doctor
Seasonal
5p
25.6%
42
MEC '16 P2 - Conveyor Belt
Seasonal
5p
21.6%
58
MEC '16 P3 - Getting Good at Programming
Seasonal
10p
30.3%
336
MEC '16 P4 - Circuitry
Seasonal
15p
16.2%
21
MEC '16 P6 - Instruments of the Ghostwriters
Seasonal
10p
11.3%
15
Median Modulo
Uncategorized
15p
7.3%
7
Meta
Classics
12p
34.1%
12
Mice and Maze
Uncategorized
7
29.4%
10
Miniature Sudoku
Uncategorized
7
30.7%
22
Miracle Sort
Seasonal
3
25.1%
412
Maximum Independent Subset
Uncategorized
15p
12.6%
10
Multiplication Improvement
Uncategorized
5
50.1%
243
MMCC '14 P1 - Tenri
Uncategorized
17p
23.2%
72
MMCC '14 P2 - Kirito
Uncategorized
20p
26.1%
154
MMCC '14 P3 - Esdeath
Uncategorized
15p
14.9%
208
MMCC '15 P1 - Inaho
Uncategorized
15p
17.8%
253
MMCC '15 P2 - Akame
Uncategorized
25p
15.5%
46
MMCC '15 P3 - Momoka
Uncategorized
25p
11.1%
10
MMM '14 A - Distinct Prime Factors
Uncategorized
7
26.9%
258
MMM '14 B - Benergy Transfer
Uncategorized
10
38.9%
26
MMM '14 C - Pie Shop
Uncategorized
17p
16.6%
29
MMM '14 D - Kuuhaku Numbers
Uncategorized
25p
10.7%
11
MMM '14 E - English Essay
Uncategorized
30p
1.5%
1
MMM '14 F - Electricity Grid
Uncategorized
25p
12.5%
4
MMM '14 G - Campfire Cooking
Uncategorized
40p
2.7%
3
MMM '14 H - Lift Control
Uncategorized
25p
71.8%
3
MNYC '16: King Modulus
Seasonal
3p
31.9%
269
MNYC '16: Moore's Law
Seasonal
5p
12.1%
53
MNYC '16: ECOO!
Seasonal
5p
9.9%
52
MNYC '16: Abdoof
Seasonal
7
17.9%
41
MNYC '16: Jelly
Seasonal
10p
12.2%
39
MNYC '16: Rocks
Seasonal
15p
28.5%
171
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