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Random
Hot problems
CCC '16 S4 - Combining Riceballs
Appleby Contest '19 P5 - Matrix Operation
Cheerio Contest 1 S2 - School Expansion
WC '96 P6 - Bases Multiplication
DMOPC '23 Contest 1 P1 - Peak Grid
Max's Anger Contest Series 2 P3 - Array Anger
CCCHK '15 J4 - Where to build my house?
Problem
Category
Points
AC %
Users ▾
Hello, World!
Uncategorized
3
56.1%
12230
CCC '13 J1 - Next in line
CCC
3
62.3%
12074
CCC '07 J1 - Who is in the Middle?
CCC
3
47.0%
9167
CCC '15 J1 - Special Day
CCC
3
36.9%
8386
A Plus B
Uncategorized
3p
48.7%
8037
CCC '14 J1 - Triangle Times
CCC
3
32.9%
7480
CCC '06 J1 - Canadian Calorie Counting
CCC
3
27.4%
7221
CCC '15 J2 - Happy or Sad
CCC
3
37.1%
7070
CCC '19 J1 - Winning Score
CCC
3
50.8%
7014
CCC '18 J1 - Telemarketer or not?
CCC
3
40.1%
6886
CCC '11 J1 - Which Alien?
CCC
3
35.6%
6387
CCC '11 S2 - Multiple Choice
CCC
3
55.1%
6279
CCC '04 J1 - Squares
CCC
3
32.5%
6131
CCC '12 J1 - Speed fines are not fine!
CCC
3
30.8%
5787
CCC '11 S1 - English or French?
CCC
5
35.6%
5775
DMOPC '15 Contest 7 P2 - Not a Wall of Text
DMOPC
3p
50.1%
5672
CCC '18 J2 - Occupy parking
CCC
3
53.4%
5661
CCC '08 J1 - Body Mass Index
CCC
3
34.8%
5624
CCC '17 J1 - Quadrant Selection
CCC
3
60.6%
5584
CCC '14 J2 - Vote Count
CCC
3
44.5%
5371
DMOPC '14 Contest 5 P1 - Core Drill
DMOPC
3p
58.5%
5001
CCC '13 J2 - Rotating letters
CCC
3
45.0%
4837
CCC '16 J1 - Tournament Selection
CCC
3
41.2%
4715
WC '16 Contest 1 J1 - A Spooky Season
Woburn Challenge
3
47.7%
4624
CCC '12 J2 - Sounds fishy!
CCC
3
33.8%
4588
CCC '17 J2 - Shifty Sum
CCC
3
54.3%
4581
CCC '00 S1 - Slot Machines
CCC
5
27.3%
4523
CCC '14 J3 - Double Dice
CCC
3
56.3%
4487
WC '15 Contest 2 J1 - A New Hope
Woburn Challenge
3
39.9%
4163
CCC '10 J1 - What is n, Daddy?
CCC
3
30.8%
4020
CCC '20 J1 - Dog Treats
CCC
3
56.1%
4017
CCC '04 J3 - Smile with Similes
CCC
3
57.8%
3972
CCC '19 S1 - Flipper
CCC
3p
46.0%
3954
CCC '13 S1 - From 1987 to 2013
CCC
5
45.8%
3923
CCC '02 J2 - AmeriCanadian
CCC
3
25.0%
3881
CCC '15 S1 - Zero That Out
CCC
3
51.0%
3880
Sorting
Classics
3
47.2%
3876
WC '17 Contest 1 J2 - How's the Weather?
Woburn Challenge
3
68.6%
3769
CCC '20 J2 - Epidemiology
CCC
3
27.1%
3705
CCC '09 J1 - ISBN
CCC
3
47.3%
3691
CCC '18 S1 - Voronoi Villages
CCC
3p
33.5%
3566
CCC '14 S1 - Party Invitation
CCC
5
47.1%
3524
CCC '04 J2 - Terms of Office
CCC
3
37.4%
3514
CCC '16 S2 - Tandem Bicycle
CCC
5p
53.2%
3501
CCC '08 J2 - Do the Shuffle
CCC
3
43.3%
3434
CCC '19 J2 - Time to Decompress
CCC
3
52.4%
3328
List Minimum
Uncategorized
3
49.8%
3286
CCC '07 J3 - Deal or No Deal Calculator
CCC
3
33.0%
3253
CCC '16 J2 - Magic Squares
CCC
3
34.6%
3250
CCC '17 S1 - Sum Game
CCC
3
47.3%
3208
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