Home
Problems
Submissions
Users
Contests
About
>
Status
Tips
API
Github
Log in
or
Sign up
This site works best with JavaScript enabled.
Problems
«
1
2
...
67
68
69
70
71
72
...
99
100
»
Problem search
Full text search
Has editorial
Show problem types
Category
All
---
AAC
ACC
APIO
Balkan OI
Baltic OI
BlueBook
Brazil OI
Bubble Cup
Bulgarian OI
CCC
CCO
CEOI
China NOI
Classics
COCI
CSPC
CTF
Data Structure Tests
DMOPC
DWITE
ECOO
EGOI
ESOI
FHC
Fun Math
GFSSOC
Google Code Jam
Google Hash Code
Google Kick Start
ICPC
IOI
JOI
Mock CCC
Mock CCO
MWC
Olympiads School
POI
SAC Coding Challenge
Seasonal
SIUCF
Taiwan NOI
TLE
TSOC
Uncategorized
VM7WC
WAC
Waterloo Local
Woburn Challenge
YAC
Point range
Go
Random
Hot problems
CCC '22 J3 - Harp Tuning
Knapsack 4
CCC '00 S1 - Slot Machines
ECOO '17 R3 P1 - Baker Brie
DMOPC '21 Contest 9 P5 - Chika Circle
A Game
DMOPC '19 Contest 7 P5 - Soriya's Programming Project
Problem
Category
Points
AC %
Users
Mock CCC '20 Contest 1 J5 - A Prime Problem
Mock CCC
12p
2.8%
20
Mock CCC '20 S1 - War
Mock CCC
3p
29.7%
477
Mock CCC '20 S2 - Flipper Redux
Mock CCC
7p
26.5%
280
Mock CCC '20 S3 - SAM I Am
Mock CCC
10p
12.7%
72
Mock CCC '20 S4 - Valentine's Day Shopping
Mock CCC
20p
7.9%
15
Mock CCC '20 Contest 2 S1 - Arithmetic Hybercube
Mock CCC
3p
54.0%
401
Mock CCC '20 Contest 2 S2 - 4D BBST on a DP
Mock CCC
5p
27.6%
281
Mock CCC '20 Contest 2 S3 - Tree Programming
Mock CCC
10p
15.5%
79
Mock CCC '20 Contest 2 S4 - Rotational Arrays
Mock CCC
10p
11.8%
61
Mock CCC '20 Contest 2 S5 - Sticks
Mock CCC
20p
1.9%
3
Mock CCC '22 Contest 1 J1 - Square Root Decomposition
Mock CCC
3
41.0%
657
Mock CCC '22 Contest 1 J2 - Biking and Hiking
Mock CCC
3
34.9%
539
Mock CCC '22 Contest 1 J3 - String Crossing Maximization
Mock CCC
7p
12.7%
245
Mock CCC '22 Contest 1 J4 - Snowball Fight
Mock CCC
5p
16.7%
239
Mock CCC '22 Contest 1 J5 - New Year's Restrictions
Mock CCC
7p
24.9%
143
Mock CCC '22 Contest 2 J1 - Opening Ceremony
Mock CCC
3
48.3%
701
Mock CCC '22 Contest 2 J2 - Snowboarding Championship
Mock CCC
3
35.7%
565
Mock CCC '22 Contest 2 J3 - Figure Skating Fun
Mock CCC
5p
30.1%
470
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
16.0%
76
Mock CCC '23 Contest 1 J1 - Final Velocity
Mock CCC
3
66.3%
737
Mock CCC '23 Contest 1 J2 - Healthy Schedule
Mock CCC
3
38.3%
560
Mock CCC '23 Contest 1 J3 - Pairing Gifts
Mock CCC
5p
12.5%
243
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
61.2%
461
Mock CCC '24 Contest 1 J2 - Simple Elo Rating System
Mock CCC
3
34.9%
223
Mock CCC '24 Contest 1 J3 - RGB Words
Mock CCC
5p
13.3%
187
Mock CCC '24 Contest 1 J5 - Mathland
Mock CCC
10p
8.1%
34
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
33.1%
188
Mock CCC '24 Contest 1 S3 - Optimal Split Point
Mock CCC
10p
3.0%
24
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
25.6%
170
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
31.3%
70
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
25.7%
79
«
1
2
...
67
68
69
70
71
72
...
99
100
»