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Random
Hot problems
CEOI '16 P2 - Kangaroo
DWITE '10 R3 #3 - Dominos Tiling
COCI '08 Contest 3 #6 Najkraci
CCC '24 J3 - Bronze Count
CCC '24 S4 - Painting Roads
CCC '23 J3 - Special Event
CCC '24 J5 - Harvest Waterloo
Problem
Category
Points
AC %
Users ▾
VM7WC '16 #3 Gold - Hello, Officer.
VM7WC
10
42.1%
460
CCC '12 S4 - A Coin Game
CCC
15
27.1%
458
VMSS Pre-Windsor P7 - Going Back to the Definitions
Uncategorized
7
26.2%
458
CCC '14 S5 - Lazy Fox
CCC
20p
17.9%
456
ECOO '21 P1 - Many Messages
ECOO
3p
28.8%
454
VM7WC '16 #2 Silver - GG
VM7WC
5
28.3%
452
An Animal Contest 7 P1 - Squirrnect 4
AAC
3
21.5%
452
Educational DP Contest AtCoder K - Stones
Uncategorized
10
53.1%
451
CCC '24 S2 - Heavy-Light Composition
CCC
5p
55.0%
450
DMOPC '17 Contest 3 P1 - An Early Christmas Present
DMOPC
3p
62.4%
449
BlueBook - Max
BlueBook
3
21.1%
448
DMOPC '14 Contest 2 P5 - Sawmill Scheme
DMOPC
10p
20.8%
447
BlueBook - Sieve
BlueBook
5
59.1%
447
BlueBook - Digits and Sums
BlueBook
3
54.6%
447
DMOPC '20 Contest 5 P1 - Home Row
DMOPC
3
34.9%
447
DMPG '15 S5 - Black and White
DMOPC
12p
25.2%
446
2spooky4me
Uncategorized
7
11.6%
446
IOI '07 P4 - Miners
IOI
15p
21.2%
444
DMOPC '19 Contest 5 P2 - Charlie's Crazy Conquest
DMOPC
5
19.3%
444
GFSSOC '15 Fall Practice P1 - Bruno and Trig
GFSSOC
3p
37.8%
442
ACM U of T Tryouts C3 A - A Research Project
ICPC
3
50.5%
442
CCC '05 S3 - Quantum Operations
CCC
10p
34.8%
439
COI '06 #1 Patrik
COCI
12
24.7%
438
COCI '07 Contest 3 #1 Cetiri
COCI
3
45.2%
438
DWITE '08 R3 #2 - Wordcount++
DWITE
5
35.6%
437
DMOPC '18 Contest 2 P1 - Pumpkin Patches
DMOPC
3
57.8%
437
DMOPC '21 Contest 1 P1 - Partial Game
DMOPC
5p
29.2%
437
DMOPC '20 Contest 3 P1 - Present Checking
DMOPC
5p
50.0%
436
Cheerio Contest 3 P1 - Wet Floor
Uncategorized
5p
47.3%
434
Troubling Triangles
Uncategorized
7
28.4%
433
TSOC '16 Contest 1 #1 - Vasile and Haircuts
TSOC
3
45.4%
433
DMOPC '16 Contest 2 P2 - Ebola Outbreak
DMOPC
7p
20.5%
433
IOI '06 P1 - Deciphering the Mayan Writing
IOI
7p
39.5%
433
BPC 1 J1 - Facial Recognition
Uncategorized
3
59.0%
433
German Nouns
Uncategorized
5
56.6%
432
GFSSOC '14 Winter J3 - Waiting
GFSSOC
3p
51.8%
432
DMOPC '17 Contest 2 P0 - Secrets
DMOPC
3
33.3%
432
MWC '15 #2 P2: Towering Towers
MWC
10p
18.1%
430
COCI '07 Contest 4 #2 Veci
COCI
5
49.1%
430
Another Sorting
Uncategorized
5p
36.1%
430
String Finding
Uncategorized
5
15.6%
428
Riolku's Mock CCC S1 - Word Bot
Mock CCC
3p
32.2%
426
GFSSOC '15 Fall J1 - CodeFights
GFSSOC
3p
40.4%
425
DMOPC '16 Contest 1 P3 - Shoe Shopping
DMOPC
7
22.6%
425
DMOPC '18 Contest 5 P3 - A Familiar Problem
DMOPC
7p
18.3%
425
DMOPC '19 Contest 4 P0 - Yikes
DMOPC
3p
48.3%
425
Mock CCC '14 S3 - Spreadsheet Sorting
Mock CCC
7
49.0%
425
Mock CCC '18 Contest 1 J4/S2 - A Square Problem
Mock CCC
5
33.7%
424
BlueBook - 10 Primes on a Line
BlueBook
5
26.5%
424
DMOPC '18 Contest 2 P4 - Damage Output
DMOPC
7p
22.0%
423
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