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
3
4
5
6
»
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
Educational DP Contest AtCoder L - Deque
CCC '04 S4 - Space Turtle
IOI '04 P4 - Phidias
COCI '14 Contest 6 #4 Kratki
A Game
CCO '23 P1 - Binaria
Educational DP Contest AtCoder H - Grid 1
Problem ▴
Category
Points
AC %
Users
CCC '16 S3 - Phonomenal Reviews
CCC
12p
26.4%
1103
CCC '16 S4 - Combining Riceballs
CCC
15p
28.7%
931
CCC '16 S5 - Circle of Life
CCC
20p
22.6%
576
CCC '17 J1 - Quadrant Selection
CCC
3
60.6%
5571
CCC '17 J2 - Shifty Sum
CCC
3
54.3%
4570
CCC '17 J3 - Exactly Electrical
CCC
3p
29.9%
2370
CCC '17 J4 - Favourite Times
CCC
5p
23.4%
1565
CCC '17 S1 - Sum Game
CCC
3
47.3%
3199
CCC '17 S2 - High Tide, Low Tide
CCC
5
27.9%
2838
CCC '17 S3 - Nailed It!
CCC
7p
30.5%
1713
CCC '17 S4 - Minimum Cost Flow
CCC
17p
14.1%
770
CCC '17 S5 - RMT
CCC
20p
19.2%
243
CCC '18 J1 - Telemarketer or not?
CCC
3
40.1%
6848
CCC '18 J2 - Occupy parking
CCC
3
53.4%
5628
CCC '18 J3 - Are we there yet?
CCC
3
55.9%
3095
CCC '18 J5 - Choose your own path
CCC
7p
24.1%
1608
CCC '18 S1 - Voronoi Villages
CCC
3p
33.5%
3554
CCC '18 S2 - Sunflowers
CCC
5p
39.6%
2805
CCC '18 S3 - RoboThieves
CCC
12p
14.2%
1133
CCC '18 S4 - Balanced Trees
CCC
15p
16.8%
574
CCC '18 S5 - Maximum Strategic Savings
CCC
20p
26.7%
405
CCC '19 J1 - Winning Score
CCC
3
50.8%
6984
CCC '19 J2 - Time to Decompress
CCC
3
52.4%
3314
CCC '19 J3 - Cold Compress
CCC
5
46.2%
3151
CCC '19 J5 - Rule of Three
CCC
20p
0.7%
7
CCC '19 S1 - Flipper
CCC
3p
46.1%
3948
CCC '19 S2 - Pretty Average Primes
CCC
5p
26.0%
2318
CCC '19 S3 - Arithmetic Square
CCC
12p
13.6%
500
CCC '19 S4 - Tourism
CCC
20p
7.7%
248
CCC '19 S5 - Triangle: The Data Structure
CCC
20p
17.8%
357
CCC '20 J1 - Dog Treats
CCC
3
56.1%
4000
CCC '20 J2 - Epidemiology
CCC
3
27.1%
3689
CCC '20 J3 - Art
CCC
3p
42.9%
2357
CCC '20 J4 - Cyclic Shifts
CCC
5p
45.7%
2284
CCC '20 J4 - Cyclic Shifts (Hard)
CCC
12p
3.8%
36
CCC '20 S1 - Surmising a Sprinter's Speed
CCC
5p
42.9%
2048
CCC '20 S2 - Escape Room
CCC
10p
12.8%
1690
CCC '20 S2 - Escape Room (Hard)
CCC
15p
5.6%
55
CCC '20 S3 - Searching for Strings
CCC
12p
8.9%
840
CCC '20 S4 - Swapping Seats
CCC
12p
25.6%
488
CCC '20 S5 - Josh's Double Bacon Deluxe
CCC
17p
29.6%
257
CCC '21 J1 - Boiling Water
CCC
3p
53.9%
3148
CCC '21 J2 - Silent Auction
CCC
3p
51.2%
2735
CCC '21 J3 - Secret Instructions
CCC
5p
36.1%
2506
CCC '21 J4 - Arranging Books
CCC
7p
19.6%
1317
CCC '21 S1 - Crazy Fencing
CCC
5p
47.7%
2554
CCC '21 S2 - Modern Art
CCC
7p
29.0%
2249
CCC '21 S3 - Lunch Concert
CCC
10p
24.6%
1016
CCC '21 S4 - Daily Commute
CCC
12p
26.1%
583
CCC '21 S5 - Math Homework
CCC
15p
24.5%
418
«
1
2
3
4
5
6
»