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Hot problems
CCC '21 S2 - Modern Art
Baltic OI '17 P5 - Plus Minus
IOI '11 P4 - Crocodile's Underground City
COCI '08 Contest 3 #2 Kemija
IOI '06 P4 - The Valley of Mexico
CCC '00 S1 - Slot Machines
Please Help Me
Problem
Category
Points
AC %
Users
CCC '04 S2 - TopYodeller
CCC
5
21.3%
768
CCC '04 S3 - Spreadsheet
CCC
10
27.3%
628
CCC '04 S4 - Space Turtle
CCC
10p
20.0%
192
CCC '04 S5 - Super Plumber
CCC
10p
23.9%
419
CCC '05 J1 - The Cell Sell
CCC
3
8.3%
1564
CCC '05 J2 - RSA Numbers
CCC
3
40.5%
3114
CCC '05 J3 - Returning Home
CCC
5
37.0%
2458
CCC '05 J4 - Cross Spiral
CCC
7p
32.6%
607
CCC '05 J5 - Bananas
CCC
10
21.5%
1502
CCC '05 S1 - Snow Calls
CCC
5
43.2%
2343
CCC '05 S2 - Mouse Move
CCC
5
37.4%
1740
CCC '05 S3 - Quantum Operations
CCC
10p
34.3%
464
CCC '05 S4 - Pyramid Message Scheme
CCC
10
35.7%
855
CCC '05 S5 - Pinball Ranking
CCC
12p
19.4%
767
CCC '06 J1 - Canadian Calorie Counting
CCC
3
27.1%
7710
CCC '06 J2 - Roll the Dice
CCC
3
27.2%
3189
CCC '06 J3 - Cell-Phone Messaging
CCC
3
41.5%
1540
CCC '06 J4 - It's tough being a teen!
CCC
7
41.7%
1285
CCC '06 J5 - CCC Othello
CCC
10p
36.7%
242
CCC '06 S1 - Maternity
CCC
5
37.5%
1175
CCC '06 S2 - Attack of the CipherTexts
CCC
5
5.6%
277
CCC '06 S3 - Tin Can Telephone
CCC
12
20.6%
543
CCC '06 S4 - Groups
CCC
10
45.1%
347
CCC '06 S5 - Origin of Life
CCC
15
19.8%
127
CCC '07 J1 - Who is in the Middle?
CCC
3
47.0%
9734
CCC '07 J2 - I Speak TXTMSG
CCC
3
21.7%
2404
CCC '07 J3 - Deal or No Deal Calculator
CCC
3
32.4%
3496
CCC '07 J4 - Anagram Checker
CCC
5
37.3%
2227
CCC '07 J5 - Keep on Truckin'
CCC
7
19.8%
1117
CCC '07 S1 - Federal Voting Age
CCC
3
36.1%
2400
CCC '07 S2 - Boxes
CCC
5
27.4%
1278
CCC '07 S3 - Friends
CCC
7
37.4%
1761
CCC '07 S4 - Waterpark
CCC
7
31.2%
1563
CCC '07 S5 - Bowling for Numbers
CCC
10p
30.2%
899
CCC '08 J1 - Body Mass Index
CCC
3
34.8%
5823
CCC '08 J2 - Do the Shuffle
CCC
3
43.1%
3691
CCC '08 J3 - GPS Text Entry
CCC
3
55.3%
1420
CCC '08 J4 - From Prefix to Postfix
CCC
7
42.9%
926
CCC '08 S1 - It's Cold Here!
CCC
5
37.6%
2255
CCC '08 S2 - Pennies in the Ring
CCC
5
30.8%
1227
CCC '08 S3 - Maze
CCC
7
29.3%
1623
CCC '08 S4 - Twenty-four
CCC
10
25.4%
866
CCC '08 S5 - Nukit
CCC
10p
37.4%
731
CCC '09 J1 - ISBN
CCC
3
47.3%
3884
CCC '09 J2 - Old Fishin' Hole
CCC
5
38.5%
1718
CCC '09 J3 - Good Times
CCC
5
20.4%
1461
CCC '09 J4 - Signage
CCC
7
29.1%
717
CCC '09 S1 - Cool Numbers
CCC
5
22.9%
2078
CCC '09 S2 - Lights Going On and Off
CCC
10
41.0%
927
CCC '09 S3 - Degrees Of Separation
CCC
10
28.0%
1398
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