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Random
Hot problems
COCI '08 Contest 3 #2 Kemija
Problem
Category
Points
AC %
Users ▴
Quine
Classics
10
35.6%
669
Valentine's Day '15 P2 - Simon and Marcy
Seasonal
7p
54.1%
671
CCC '14 S4 - Tinted Glass Window
CCC
15p
29.2%
673
The Mirror
Uncategorized
5
33.3%
678
DMOPC '15 Contest 1 P1 - Itami and Manga
DMOPC
3p
48.3%
681
ACM U of T Tryouts C0 B - Interleaving Leaves
ICPC
5
53.9%
682
CCC '03 S5 - Trucking Troubles
CCC
10p
17.5%
683
BlueBook - Powers of 2
BlueBook
3
36.4%
684
Postfix Notation
Uncategorized
7
18.9%
685
CCC '09 J4 - Signage
CCC
7
29.2%
685
BlueBook - Column of Numbers
BlueBook
3
42.6%
691
BlueBook - Cost
BlueBook
3
20.5%
692
IOI '01 P1 - Mobile Phones
IOI
15p
27.4%
704
BlueBook - Min
BlueBook
3
39.7%
705
DMPG '16 B1 - BFS
DMOPC
3p
56.3%
706
Mock CCC '22 Contest 2 J1 - Opening Ceremony
Mock CCC
3
48.3%
707
CCC '08 S5 - Nukit
CCC
10p
37.1%
708
CCC '02 J1 - 0123456789
CCC
3
5.4%
724
Word Scrambler
Uncategorized
5
49.7%
724
CCC '04 S2 - TopYodeller
CCC
5
21.4%
725
Mock CCC '19 Contest 1 J2 - Pusheen OCR
Mock CCC
3p
54.8%
725
DMOPC '14 Contest 7 P2 - Tides
DMOPC
5p
19.1%
728
Coin Change
Uncategorized
7
40.4%
730
DMOPC '19 Contest 5 P1 - Conspicuous Cryptic Checklist
DMOPC
5
62.0%
732
CCC '13 S5 - Factor Solitaire
CCC
15p
42.8%
735
Is it a Tree?
Seasonal
7p
33.4%
737
CCC '05 S5 - Pinball Ranking
CCC
12p
19.5%
741
Mock CCC '23 Contest 1 J1 - Final Velocity
Mock CCC
3
65.5%
741
Binary Indexed Tree Test
Data Structure Tests
10p
28.8%
743
CCC '08 S4 - Twenty-four
CCC
10
25.5%
743
ECOO '19 R2 P1 - Email
ECOO
5p
31.6%
743
COCI '14 Contest 2 #2 Utrka
COCI
5p
29.0%
746
Mock CCC '19 Contest 2 J1 - Tudor Drinks Some Tea
Mock CCC
3p
51.6%
748
A Noisy Class
Uncategorized
7
29.4%
752
COCI '17 Contest 1 #1 Cezar
COCI
3
32.7%
753
DMOPC '14 Contest 5 P2 - Longest Tunnel
DMOPC
3p
64.9%
754
Mock CCC '15 J1 - 416
Mock CCC
3p
24.2%
762
CCC '17 S4 - Minimum Cost Flow
CCC
17p
14.1%
771
DMOPC '14 Contest 2 P1 - Logging Log
DMOPC
3p
37.6%
780
Back From Summer '17 P1: Pithy Pastimes
Seasonal
3
39.2%
780
Fibonacci Sequence
Uncategorized
15p
13.0%
786
Bubble Sort
Uncategorized
7
33.9%
789
Maximum Sum
Uncategorized
7
33.4%
790
ECOO '17 R3 P1 - Baker Brie
ECOO
5p
40.4%
791
CCC '97 S2 - Nasty Numbers
CCC
5
46.0%
796
BlueBook - Equation
BlueBook
3
26.1%
798
DMOPC '13 Contest 1 P4 - AFK
DMOPC
7p
26.0%
802
GFSSOC '15 Fall J4 - Marathon
GFSSOC
7p
39.8%
804
CCCHK '08 J1 - Best fish
CCC
3
38.1%
805
VPEX P0 - Pizza
Uncategorized
3p
40.2%
805
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