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Problem Category Points AC % ▾ Users
Waterloo 2001 Winter B - Tight words Waterloo Local 5 100.0% 1
Another Contest 6 Problem 9 - Obligatory Wood IV Problem ACC 1p 98.7% 1266
COCI '15 Contest 6 #1 Bela COCI 5 79.7% 55
DWITE '09 R3 #4 - Spiral Out DWITE 7 77.8% 13
WC '01 P1 - The Rock Woburn Challenge 7 77.4% 19
DMOJ Capture The Flag '20 C3 - Small AES CTF 7 75.9% 21
COCI '12 Contest 6 #1 Baka COCI 3p 75.8% 75
COCI '15 Contest 4 #3 Deathstar COCI 7p 75.4% 270
SAC '22 Code Challenge 5 P2 - Querying Extensions SAC Coding Challenge 5p 75.4% 257
COCI '21 Contest 2 #1 Kaučuk COCI 5p 75.2% 80
CTU Open Contest 2018 - Escalators ICPC 15 75.0% 5
WC '18 Contest 3 J3 - R Woburn Challenge 3p 75.0% 77
JOI '20 Spring Camp Day 2 P3 - Ruins 3 JOI 40p 75.0% 2
Google Code Jam '08 Round 1A Problem A - Minimum Scalar Product Google Code Jam 5p 75.0% 5
Google Code Jam '13 Qualification Round Problem A - Tic-Tac-Toe-Tomek Google Code Jam 5p 75.0% 2
Google Code Jam '22 Round 1B Problem B - Controlled Inflation Google Code Jam 10p 75.0% 2
COCI '16 Contest 4 #2 Kartomat COCI 5p 74.8% 134
SAC '22 Code Challenge 3 P1 - Hair Hazards SAC Coding Challenge 3 74.7% 408
CCCJQR P1 Seasonal 1 74.5% 575
NOIP '07 P1 - Counting Numbers China NOI 3p 74.4% 27
Wesley's Anger Contest Reject 2 - 🥕suba WAC 3 74.2% 137
SAC '22 Code Challenge 5 Junior P2 - Badminton Scoring SAC Coding Challenge 3 73.7% 258
Google Code Jam '21 Qualification Round Problem A - Reversort Google Code Jam 3p 73.7% 11
CTU Open Contest 2018 - Horsemeet ICPC 10 73.3% 12
JOI '21 Open P1 - Crossing JOI 20p 73.3% 5
COCI '13 Contest 5 #2 Obilazak COCI 7p 73.3% 119
DWITE '09 R3 #3 - Binary Test Strings 2 DWITE 5 73.2% 27
JOI '18 Spring Camp Day 1 P3 - Tents JOI 20p 73.2% 27
Waterloo 2017 Winter A - Vera and Outfits Waterloo Local 3 73.1% 494
MMM '14 H - Lift Control Uncategorized 25p 72.9% 3
GFSS Christmas Challenge P1 - Arithmetic Operators GFSSOC 3 72.8% 138
DWITE '08 R4 #1 - Four player Pong with no players DWITE 7 72.1% 57
NOI '99 P5 - Optimally Connected Subset China NOI 15p 72.0% 18
COCI '16 Contest 7 #1 Baza COCI 5p 71.8% 26
DWITE '08 R3 #5 - Now in 3D DWITE 7 71.7% 22
CPC '21 Contest 1 P0 - AQT and Alphabet Uncategorized 3 71.5% 351
CTU Open Contest 2017 - Chessboard Dancing ICPC 7 71.4% 5
Google Code Jam '18 Qualification Round Problem A - Saving The Universe Again Google Code Jam 1p 71.4% 4
Google Code Jam '22 Round 1A Problem A - Double or One Thing Google Code Jam 5p 71.4% 4
Waterloo 2001 Fall 1 A - Average Speed Waterloo Local 3 71.4% 4
WC '18 Contest 1 J2 - Making the Cut Woburn Challenge 3p 71.3% 184
DMOJ Capture The Flag '20 R1 - Classic Java CTF 5 71.1% 25
COCI '06 Contest 2 #1 R2 COCI 3 70.8% 1055
COCI '22 Contest 1 #1 Desni Klik COCI 5p 70.6% 135
DMOJ Capture The Flag '20 C2 - Small RSA CTF 5 70.5% 64
DWITE '07 R5 #3 - Parity bit DWITE 5 70.4% 98
SAC '22 Code Challenge 1 P1 - That Teacher SAC Coding Challenge 3 70.2% 500
Max's Anger Contest Series 2 P2 - Password Anger Seasonal 5p 70.1% 144
DWITE '08 R3 #1 - ASCII Rhombus DWITE 5 70.1% 44
DWITE '10 R4 #5 - Sleepwalking Probabilities DWITE 5 70.0% 10