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Random
Hot problems
Educational DP Contest AtCoder C - Vacation
COCI '14 Contest 5 #3 Traktor
CCCHK '15 J3 - Queens can't attack me!
IOI '04 P4 - Phidias
CCC '10 J2 - Up and Down
IOI '14 Practice Task 1 - Square
COCI '07 Contest 4 #4 Muzicari
Problem
Category
Points
AC %
Users ▾
Hello, World!
Uncategorized
3
56.1%
12171
CCC '13 J1 - Next in line
CCC
3
62.3%
12002
CCC '07 J1 - Who is in the Middle?
CCC
3
47.0%
9122
CCC '15 J1 - Special Day
CCC
3
36.9%
8317
A Plus B
Uncategorized
3p
48.7%
8006
CCC '14 J1 - Triangle Times
CCC
3
32.9%
7453
CCC '06 J1 - Canadian Calorie Counting
CCC
3
27.4%
7160
CCC '15 J2 - Happy or Sad
CCC
3
37.1%
7008
CCC '19 J1 - Winning Score
CCC
3
50.9%
6961
CCC '18 J1 - Telemarketer or not?
CCC
3
40.1%
6812
CCC '11 J1 - Which Alien?
CCC
3
35.6%
6364
CCC '11 S2 - Multiple Choice
CCC
3
55.2%
6242
CCC '04 J1 - Squares
CCC
3
32.5%
6115
CCC '12 J1 - Speed fines are not fine!
CCC
3
30.8%
5767
CCC '11 S1 - English or French?
CCC
5
35.5%
5720
CCC '18 J2 - Occupy parking
CCC
3
53.4%
5611
CCC '08 J1 - Body Mass Index
CCC
3
34.8%
5606
DMOPC '15 Contest 7 P2 - Not a Wall of Text
DMOPC
3p
50.1%
5599
CCC '17 J1 - Quadrant Selection
CCC
3
60.6%
5564
CCC '14 J2 - Vote Count
CCC
3
44.6%
5335
DMOPC '14 Contest 5 P1 - Core Drill
DMOPC
3p
58.6%
4947
CCC '13 J2 - Rotating letters
CCC
3
45.0%
4809
CCC '16 J1 - Tournament Selection
CCC
3
41.2%
4694
WC '16 Contest 1 J1 - A Spooky Season
Woburn Challenge
3
47.7%
4574
CCC '12 J2 - Sounds fishy!
CCC
3
33.8%
4570
CCC '17 J2 - Shifty Sum
CCC
3
54.3%
4557
CCC '14 J3 - Double Dice
CCC
3
56.4%
4472
CCC '00 S1 - Slot Machines
CCC
5
27.3%
4464
WC '15 Contest 2 J1 - A New Hope
Woburn Challenge
3
40.1%
4121
CCC '10 J1 - What is n, Daddy?
CCC
3
30.8%
4010
CCC '20 J1 - Dog Treats
CCC
3
56.1%
3992
CCC '04 J3 - Smile with Similes
CCC
3
57.8%
3962
CCC '19 S1 - Flipper
CCC
3p
46.1%
3946
CCC '13 S1 - From 1987 to 2013
CCC
5
45.7%
3906
CCC '15 S1 - Zero That Out
CCC
3
51.0%
3871
CCC '02 J2 - AmeriCanadian
CCC
3
25.1%
3861
Sorting
Classics
3
47.3%
3842
WC '17 Contest 1 J2 - How's the Weather?
Woburn Challenge
3
68.5%
3725
CCC '09 J1 - ISBN
CCC
3
47.4%
3678
CCC '20 J2 - Epidemiology
CCC
3
27.1%
3675
CCC '18 S1 - Voronoi Villages
CCC
3p
33.5%
3551
CCC '14 S1 - Party Invitation
CCC
5
47.1%
3516
CCC '04 J2 - Terms of Office
CCC
3
37.4%
3509
CCC '16 S2 - Tandem Bicycle
CCC
5p
53.2%
3494
CCC '08 J2 - Do the Shuffle
CCC
3
43.2%
3405
CCC '19 J2 - Time to Decompress
CCC
3
52.4%
3306
List Minimum
Uncategorized
3
49.8%
3278
CCC '16 J2 - Magic Squares
CCC
3
34.7%
3241
CCC '07 J3 - Deal or No Deal Calculator
CCC
3
33.0%
3239
CCC '17 S1 - Sum Game
CCC
3
47.4%
3192
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