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Hot problems
CCC '21 J3 - Secret Instructions
CCC '24 S2 - Heavy-Light Composition
DMOPC '20 Contest 4 P1 - Missing Numbers
COCI '06 Regional #3 Firefly
CCC '17 J4 - Favourite Times
ACSL '09 Practice P4 - Rank
UHCC1 P2 - String
Problem
Category
Points
AC %
Users
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.7%
817
CCC '05 S5 - Pinball Ranking
CCC
12p
19.5%
738
CCC '06 J1 - Canadian Calorie Counting
CCC
3
27.4%
7204
CCC '06 J2 - Roll the Dice
CCC
3
27.1%
3035
CCC '06 J3 - Cell-Phone Messaging
CCC
3
41.3%
1464
CCC '06 J4 - It's tough being a teen!
CCC
7
41.5%
1242
CCC '06 J5 - CCC Othello
CCC
10p
36.0%
228
CCC '06 S1 - Maternity
CCC
5
37.5%
1146
CCC '06 S2 - Attack of the CipherTexts
CCC
5
5.2%
238
CCC '06 S3 - Tin Can Telephone
CCC
12
20.8%
527
CCC '06 S4 - Groups
CCC
10
46.5%
327
CCC '06 S5 - Origin of Life
CCC
15
18.8%
117
CCC '07 J1 - Who is in the Middle?
CCC
3
47.0%
9157
CCC '07 J2 - I Speak TXTMSG
CCC
3
21.8%
2281
CCC '07 J3 - Deal or No Deal Calculator
CCC
3
33.0%
3250
CCC '07 J4 - Anagram Checker
CCC
5
37.2%
2124
CCC '07 J5 - Keep on Truckin'
CCC
7
19.7%
1069
CCC '07 S1 - Federal Voting Age
CCC
3
36.2%
2325
CCC '07 S2 - Boxes
CCC
5
27.5%
1210
CCC '07 S3 - Friends
CCC
7
37.5%
1698
CCC '07 S4 - Waterpark
CCC
7
30.9%
1499
CCC '07 S5 - Bowling for Numbers
CCC
10p
29.9%
865
CCC '08 J1 - Body Mass Index
CCC
3
34.8%
5618
CCC '08 J2 - Do the Shuffle
CCC
3
43.2%
3416
CCC '08 J3 - GPS Text Entry
CCC
3
56.0%
1339
CCC '08 J4 - From Prefix to Postfix
CCC
7
42.8%
887
CCC '08 S1 - It's Cold Here!
CCC
5
37.4%
2176
CCC '08 S2 - Pennies in the Ring
CCC
5
30.5%
1183
CCC '08 S3 - Maze
CCC
7
29.3%
1561
CCC '08 S4 - Twenty-four
CCC
10
25.4%
739
CCC '08 S5 - Nukit
CCC
10p
37.2%
705
CCC '09 J1 - ISBN
CCC
3
47.4%
3687
CCC '09 J2 - Old Fishin' Hole
CCC
5
39.2%
1585
CCC '09 J3 - Good Times
CCC
5
20.3%
1381
CCC '09 J4 - Signage
CCC
7
29.2%
684
CCC '09 S1 - Cool Numbers
CCC
5
22.8%
2026
CCC '09 S2 - Lights Going On and Off
CCC
10
40.5%
897
CCC '09 S3 - Degrees Of Separation
CCC
10
28.0%
1346
CCC '09 S4 - Shop and Ship
CCC
10
21.0%
1030
CCC '09 S5 - Wireless
CCC
12p
34.8%
621
CCC '10 J1 - What is n, Daddy?
CCC
3
30.8%
4015
CCC '10 J2 - Up and Down
CCC
5
21.8%
2048
CCC '10 J3 - Punchy
CCC
5
33.0%
1397
CCC '10 J4 - Global Warming
CCC
5p
22.5%
1055
CCC '10 J5 - Knight Hop
CCC
7
36.6%
2403
CCC '10 S1 - Computer Purchase
CCC
5
14.1%
1319
CCC '10 S2 - Huffman Encoding
CCC
5
53.6%
1573
CCC '10 S3 - Firehose
CCC
15p
18.2%
646
CCC '10 S4 - Animal Farm
CCC
15p
25.5%
528
CCC '10 S5 - Nutrient Tree
CCC
20p
19.6%
267
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