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Hot problems
CCC '12 S3 - Absolutely Acidic
CCC '21 J3 - Secret Instructions
CCC '24 S2 - Heavy-Light Composition
DMOPC '20 Contest 4 P1 - Missing Numbers
COCI '06 Regional #3 Firefly
ECOO '19 R1 P1 - Free Shirts
ACSL '09 Practice P4 - Rank
Problem
Category
Points
AC %
Users
CCC '11 J1 - Which Alien?
CCC
3
35.6%
6373
CCC '11 J2 - Who Has Seen The Wind
CCC
5
25.7%
1861
CCC '11 J3 - Sumac Sequences
CCC
5
43.3%
2870
CCC '11 J4 - Boring Business
CCC
7
27.8%
1508
CCC '11 J5 - Unfriend
CCC
7
46.8%
1003
CCC '11 S1 - English or French?
CCC
5
35.6%
5759
CCC '11 S2 - Multiple Choice
CCC
3
55.1%
6272
CCC '11 S3 - Alice Through the Looking Glass
CCC
10p
36.1%
1195
CCC '11 S4 - Blood Distribution
CCC
15p
7.7%
155
CCC '11 S5 - Switch
CCC
12p
18.3%
414
CCC '12 J1 - Speed fines are not fine!
CCC
3
30.8%
5782
CCC '12 J2 - Sounds fishy!
CCC
3
33.8%
4586
CCC '12 J3 - Icon Scaling
CCC
3
51.3%
2880
CCC '12 J4 - Big Bang Secrets
CCC
3
59.2%
2398
CCC '12 S1 - Don't pass me the ball!
CCC
3
56.4%
2234
CCC '12 S2 - Aromatic Numbers
CCC
5
53.2%
1708
CCC '12 S3 - Absolutely Acidic
CCC
7
26.6%
1852
CCC '12 S4 - A Coin Game
CCC
15
26.9%
457
CCC '12 S5 - Mouse Journey
CCC
7
45.6%
1814
CCC '13 J1 - Next in line
CCC
3
62.2%
12043
CCC '13 J2 - Rotating letters
CCC
3
45.0%
4833
CCC '13 J4 - Time on task
CCC
5
44.5%
3008
CCC '13 S1 - From 1987 to 2013
CCC
5
45.8%
3916
CCC '13 S2 - Bridge Transport
CCC
5
26.7%
2053
CCC '13 S3 - Chances of Winning
CCC
10
41.2%
1364
CCC '13 S4 - Who is Taller?
CCC
7
16.8%
1229
CCC '13 S5 - Factor Solitaire
CCC
15p
42.8%
732
CCC '14 J1 - Triangle Times
CCC
3
32.9%
7469
CCC '14 J2 - Vote Count
CCC
3
44.5%
5367
CCC '14 J3 - Double Dice
CCC
3
56.3%
4483
CCC '14 S1 - Party Invitation
CCC
5
47.1%
3524
CCC '14 S2 - Assigning Partners
CCC
5
33.3%
2842
CCC '14 S3 - The Geneva Confection
CCC
7p
26.4%
2805
CCC '14 S4 - Tinted Glass Window
CCC
15p
29.2%
672
CCC '14 S5 - Lazy Fox
CCC
20p
17.8%
454
CCC '15 J1 - Special Day
CCC
3
36.8%
8361
CCC '15 J2 - Happy or Sad
CCC
3
37.1%
7052
CCC '15 J3 - Rövarspråket
CCC
5p
38.5%
2264
CCC '15 J4 - Wait Time
CCC
5
39.4%
1311
CCC '15 J5 - π-day
CCC
10p
27.4%
1463
CCC '15 S1 - Zero That Out
CCC
3
51.0%
3876
CCC '15 S2 - Jerseys
CCC
5p
26.7%
1955
CCC '15 S3 - Gates
CCC
10p
18.7%
1776
CCC '15 S4 - Convex Hull
CCC
15p
27.4%
1159
CCC '15 S5 - Greedy For Pies
CCC
17p
23.4%
553
CCC '16 J1 - Tournament Selection
CCC
3
41.2%
4705
CCC '16 J2 - Magic Squares
CCC
3
34.7%
3242
CCC '16 J3 - Hidden Palindrome
CCC
5
45.9%
2551
CCC '16 J4 - Arrival Time
CCC
5
29.0%
1680
CCC '16 S1 - Ragaman
CCC
3p
29.7%
2298
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