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
...
14
15
»
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 '24 S2 - Heavy-Light Composition
Educational DP Contest AtCoder K - Stones
Educational DP Contest AtCoder I - Coins
IOI '94 P1 - The Triangle
COCI '06 Regional #3 Firefly
CCC '17 J4 - Favourite Times
GFSSOC '15 Winter J5 - Secret Santa
Problem
Category
Points
AC %
Users ▾
COCI '06 Contest 5 #1 Trik
COCI
3
52.9%
2577
COCI '16 Contest 1 #1 Tarifa
COCI
3
58.6%
2397
COCI '18 Contest 3 #1 Magnus
COCI
5
33.5%
1591
COCI '08 Contest 3 #2 Kemija
COCI
5
58.5%
1397
COCI '08 Contest 1 #2 Ptice
COCI
5
39.9%
1369
COCI '06 Contest 1 #1 Modulo
COCI
3
60.2%
1205
COCI '13 Contest 3 #1 Riječi
COCI
5p
33.2%
1163
COCI '06 Contest 2 #1 R2
COCI
3
69.9%
1115
COCI '18 Contest 4 #1 Elder
COCI
5p
36.8%
1030
COCI '12 Contest 5 #1 Ljestvica
COCI
5p
19.4%
975
COCI '06 Contest 2 #2 ABC
COCI
3
45.6%
867
COCI '17 Contest 1 #1 Cezar
COCI
3
32.6%
748
COCI '14 Contest 2 #2 Utrka
COCI
5p
28.8%
744
COCI '06 Contest 1 #2 Herman
COCI
5
42.1%
654
COCI '09 Contest 1 #1 Note
COCI
3
52.5%
640
COCI '08 Contest 3 #1 Pet
COCI
5
57.3%
632
COCI '07 Contest 2 #1 Bijele
COCI
3
64.3%
619
COCI '06 Contest 3 #1 Patuljci
COCI
5
60.0%
592
COCI '08 Contest 2 #3 Perket
COCI
7
47.2%
585
COCI '06 Contest 1 #4 Slikar
COCI
10
24.2%
579
COCI '07 Contest 5 #1 Tri
COCI
3
41.7%
512
COCI '06 Contest 4 #1 Sibice
COCI
3
58.8%
506
COCI '18 Contest 2 #1 Preokret
COCI
5p
31.2%
500
COCI '06 Contest 1 #5 Bond
COCI
12
24.1%
488
COCI '08 Contest 1 #1 Skocimis
COCI
5
47.6%
487
COCI '13 Contest 1 #4 Lopov
COCI
15p
27.6%
485
COCI '08 Contest 4 #1 Mjehuric
COCI
3
38.7%
472
COI '06 #1 Patrik
COCI
12
24.7%
437
COCI '07 Contest 3 #1 Cetiri
COCI
3
45.1%
436
COCI '07 Contest 4 #2 Veci
COCI
5
49.1%
429
COCI '09 Contest 4 #1 Autori
COCI
3
69.9%
413
COCI '07 Contest 1 #1 Cetvrta
COCI
5
56.4%
410
COCI '06 Contest 3 #2 N-puzzle
COCI
5
45.7%
408
COCI '08 Contest 2 #1 Kornislav
COCI
5
46.1%
398
COCI '06 Contest 2 #4 Sjecišta
COCI
7
64.7%
397
COCI '08 Contest 6 #1 Buka
COCI
5
34.4%
397
COCI '09 Contest 3 #1 Filip
COCI
3
57.0%
394
COCI '07 Contest 2 #2 Crne
COCI
3
39.5%
390
COCI '06 Contest 2 #5 Stol
COCI
12p
45.5%
383
COCI '09 Contest 1 #2 Domino
COCI
5
66.3%
379
COCI '07 Regional #1 Platforme
COCI
7
29.4%
371
COCI '15 Contest 2 #1 Marko
COCI
5
47.3%
365
COCI '14 Contest 5 #1 Funghi
COCI
3p
49.4%
346
COCI '14 Contest 1 #2 Klopka
COCI
5p
44.7%
334
COCI '06 Contest 1 #3 Okviri
COCI
5
41.6%
333
COCI '07 Contest 4 #1 Vauvau
COCI
5
58.4%
332
COCI '06 Contest 6 #1 Prase
COCI
5p
58.6%
327
COCI '14 Contest 1 #1 Prosjek
COCI
5p
58.4%
326
COCI '08 Contest 4 #2 Datum
COCI
3
46.0%
323
COCI '09 Contest 2 #1 Faktor
COCI
3p
67.9%
323
«
1
2
3
4
5
6
...
14
15
»