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Hot problems
WC '95 P4 - Wildcard
Pick It
Cheerio Contest 1 S2 - School Expansion
Appleby Contest '19 P5 - Matrix Operation
CCC '16 S4 - Combining Riceballs
Max's Anger Contest Series 2 P3 - Array Anger
SAC '22 Code Challenge 5 P2 - Querying Extensions
Problem
Category
Points ▾
AC %
Users
NOIP '04 P2 - Combine Fruit
China NOI
5
31.9%
44
WOSS Dual Olympiad 2022 J3/S1: Christmas List
Seasonal
5p
58.6%
154
WOSS Dual Olympiad 2022 Team Round P2: Bobby's Studying Schedule
Seasonal
5
58.5%
48
NOIP '07 P2 - Expanding Strings
China NOI
5p
13.2%
20
NOIP '08 P1 - Silly Monkey
China NOI
5p
38.4%
29
Mock CCC '23 1 S1 - Composite Fibonacci Numbers
Mock CCC
5p
13.0%
148
Mock CCC '23 1 S2 - Keenan Hates Triangles
Mock CCC
5p
22.9%
97
DMOPC '22 Contest 3 P1 - Holiday Colouring
DMOPC
5p
21.5%
373
Mock CCC '23 Contest 1 J3 - Pairing Gifts
Mock CCC
5p
12.5%
243
Mock CCC '23 Contest 1 J4 - String Decryption
Mock CCC
5p
16.9%
166
Cheerio Contest 3 P2 - Double-O-Seven
Uncategorized
5p
42.2%
387
Cheerio Contest 3 P1 - Wet Floor
Uncategorized
5p
47.3%
434
Max's Anger Contest Series 2 P2 - Password Anger
Seasonal
5p
70.5%
168
COCI '22 Contest 3 #1 Estimathon
COCI
5p
28.0%
175
Waterloo 2023 Winter A - So I'll Max Out My Constructive Algorithm Skills
Waterloo Local
5
32.9%
23
DMOPC '22 Contest 4 P1 - Alone Time
DMOPC
5p
14.2%
179
COCI '22 Contest 4 #1 7Krokods
COCI
5p
57.1%
102
CCC '23 S1 - Trianglane
CCC
5p
32.0%
1718
CCC '23 J3 - Special Event
CCC
5p
38.0%
1294
Google Code Jam '22 Qualification Round Problem B - 3D Printing
Google Code Jam
5p
60.5%
15
Google Code Jam '22 Qualification Round Problem C - d1000000
Google Code Jam
5p
52.4%
19
Yet Another Contest 7 P1 - Page Turning
YAC
5p
20.0%
276
COCI '22 Contest 5 #1 Kalendar
COCI
5p
44.3%
87
Google Code Jam '08 Qualification Round Problem B - Saving the Universe
Google Code Jam
5p
41.7%
4
Google Code Jam '08 Round 1A Problem A - Minimum Scalar Product
Google Code Jam
5p
68.4%
11
Google Code Jam '09 Qualification Round Problem B - Watersheds
Google Code Jam
5p
33.3%
4
Google Code Jam '09 Qualification Round Problem A - Alien Language
Google Code Jam
5p
63.6%
5
Google Code Jam '10 Qualification Round Problem B - Snapper Chain
Google Code Jam
5p
42.9%
6
Google Code Jam '11 Qualification Round Problem A - Bot Trust
Google Code Jam
5
57.1%
3
Google Code Jam '11 Qualification Round Problem C - Magicka
Google Code Jam
5p
42.9%
3
Google Code Jam '11 Round 1A Problem A - FreeCell Statistics
Google Code Jam
5p
44.4%
3
Google Code Jam '12 Qualification Round Problem B - Dancing With the Googlers
Google Code Jam
5p
30.8%
3
Google Code Jam '12 Qualification Round Problem C - Recycled Numbers
Google Code Jam
5p
40.0%
2
Google Code Jam '12 Round 1A Problem A - Password Problem
Google Code Jam
5p
71.4%
2
Google Code Jam '14 Qualification Round Problem A - Magic Trick
Google Code Jam
5p
62.5%
5
Google Code Jam '14 Qualification Round Problem B - Cookie Clicker Alpha
Google Code Jam
5p
57.1%
3
Google Code Jam '15 Qualification Round Problem B - Infinite House of Pancakes
Google Code Jam
5p
12.5%
2
Google Code Jam '15 Round 1A Problem A - Mushroom Monster
Google Code Jam
5p
60.0%
3
Google Code Jam '16 Qualification Round Problem A - Counting Sheep
Google Code Jam
5p
35.0%
5
Google Code Jam '16 Qualification Round Problem B - Revenge of the Pancakes
Google Code Jam
5p
66.7%
2
Google Code Jam '16 Round 1A Problem A - The Last Word
Google Code Jam
5p
66.7%
4
Google Code Jam '17 Qualification Round Problem A - Oversized Pancake Flipper
Google Code Jam
5p
35.7%
5
Google Code Jam '17 Qualification Round Problem B - Tidy Numbers
Google Code Jam
5p
31.6%
4
Google Code Jam '18 Qualification Round Problem A - Saving The Universe Again
Google Code Jam
5p
58.3%
6
Google Code Jam '20 Qualification Round Problem B - Nesting Depth
Google Code Jam
5p
50.0%
5
Google Code Jam '22 Round 1B Problem A - Pancake Deque
Google Code Jam
5p
40.6%
8
Google Code Jam '22 Round 1A Problem A - Double or One Thing
Google Code Jam
5p
37.0%
8
Wesley's Anger Contest Reject 5 - Two Permutations
WAC
5p
18.0%
160
Waterloo 2016 Fall C - Wizard of Odds
Waterloo Local
5
34.3%
9
Waterloo 2016 Fall D - Treasure Hunt
Waterloo Local
5
36.8%
13
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