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Random
Hot problems
CCC '24 J3 - Bronze Count
CCC '00 S1 - Slot Machines
CCC '19 S2 - Pretty Average Primes
Problem
Category
Points
AC %
▴
Users
NOI '23 P4 - Trade
China NOI
20p
46.7%
7
NOI '23 P5 - String
China NOI
25p
18.9%
7
NOI '23 P6 - Merge the Books
China NOI
30p
16.7%
3
IOI '23 P1 - Closing Time
IOI
25p
4.6%
20
IOI '23 P2 - Longest Trip
IOI
25p
3.1%
13
IOI '23 P3 - Soccer Stadium
IOI
30p
4.7%
12
IOI '23 P4 - Beech Tree
IOI
35p
4.9%
3
IOI '23 P5 - Overtaking
IOI
25p
6.1%
11
IOI '23 P6 - Robot Contest
IOI
40p
3.4%
2
Singularity Cup P3 - Interplanetary Travel
Uncategorized
15p
9.4%
98
Waterloo 2023 Fall A - Black Frame
Waterloo Local
12
25.8%
14
Waterloo 2023 Fall B - Orb Tent
Waterloo Local
17
30.0%
11
Waterloo 2023 Fall C - Whitewater Rafting
Waterloo Local
17
26.2%
14
Waterloo 2023 Fall D - Reptilian Communism
Waterloo Local
7
25.4%
26
Waterloo 2023 Fall E - Loose Goose
Waterloo Local
25
4.5%
1
HHPC1 P6 - Yarn Street's Strategic Shopping
Uncategorized
20p
8.4%
5
HHPC1 P3 - Yonder Ridge
Uncategorized
12p
11.0%
30
HHPC1 P5 - Yunity Grouping Objects
Uncategorized
17p
34.1%
12
Amplitude Hackathon '23 Problem 1 - Company Values
Uncategorized
0p
30.4%
49
Amplitude Hackathon '23 Problem 3 - Dedupe
Uncategorized
5p
53.3%
38
Amplitude Hackathon '23 Problem 2 - Gigatron Lag
Uncategorized
3p
26.2%
38
Amplitude Hackathon '23 Problem 4 - Frequency Queries
Uncategorized
7p
15.3%
16
Amplitude Hackathon '23 Problem 6 - Journeys
Uncategorized
10p
26.4%
12
DMOPC '23 Contest 1 P5 - Perfect Matching
DMOPC
25p
11.5%
14
Amplitude Hackathon '23 Problem 5 - Partition Assignment
Uncategorized
7p
22.5%
19
WOSS Dual Olympiad 2023 Team Round P1: Combining Candy Canes
Uncategorized
5
32.0%
47
WOSS Dual Olympiad 2023 Team Round P2: Holding Eggnog
Uncategorized
7
35.3%
26
UACC 1 P4 - Converging Streams
Uncategorized
10
50.6%
68
X Diagonal
Uncategorized
5p
34.0%
8
Amplitude Hackathon '23 Practice Problem 1 - Gigatron EPS Modulo 998244353
Uncategorized
3p
58.2%
40
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!
Uncategorized
5p
14.3%
19
Amplitude Hackathon '23 Practice Problem 3 - Demo Day Demos
Uncategorized
5p
31.2%
24
Amplitude Hackathon '23 Practice Problem 4 - Gigatron Autoscaling
Uncategorized
3p
65.5%
28
WOSS Dual Olympiad 2023 J3/S1: Moving Sand
Uncategorized
7
38.2%
114
Amplitude Hackathon '23 Practice Problem 5 - What is Spenser's Last Name?
Uncategorized
0p
42.4%
27
Yet Another Contest 8 P6 - Into the Woods
YAC
20p
8.3%
14
WOSS Dual Olympiad 2023 J1: Minimum Price
Uncategorized
3
68.6%
173
WOSS Dual Olympiad 2023 J2: 3 Numbers
Uncategorized
5
33.3%
124
Mock CCC '24 Contest 1 S3 - Optimal Split Point
Mock CCC
10p
3.0%
24
Conquer The Future
Uncategorized
0
44.4%
7
Committing Time Fraud
Uncategorized
0
1.8%
7
Mock CCC '24 Contest 1 J5 - Mathland
Mock CCC
10p
8.1%
34
Collate The Findings
Uncategorized
0
15.5%
34
Mock CCC '24 Contest 1 S5 - Mock CCC 2025
Mock CCC
20p
14.2%
18
Capture The Flag 2
Uncategorized
12
56.3%
9
Click The Formulas
Uncategorized
0
56.3%
7
OTHS Coding Competition 1 (Mock CCC) J5 - Scavenger Hunt
Uncategorized
10p
20.3%
69
Triangles
Uncategorized
30p
23.8%
3
Catching Their Flights
Uncategorized
0p
3.4%
11
Cryptic Tile Forge
Uncategorized
0
24.3%
9
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