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Problem Category Points AC % ▾ Users
Waterloo 2001 Winter B - Tight words Waterloo Local 7 66.7% 4
NOI '17 P5 - Vegetables China NOI 25p 66.7% 4
Mock CCC '23 Contest 1 J1 - Final Velocity Mock CCC 3 66.6% 733
COCI '09 Contest 1 #2 Domino COCI 5 66.3% 379
SAC '22 Code Challenge 3 Junior P1 - Normal Problem SAC Coding Challenge 3p 66.3% 331
VM7WC '16 #2 Bronze - G VM7WC 5 66.3% 258
DMOJ Capture The Flag '20 F2 - Queries & Strings CTF 5 66.3% 50
DWITE '09 R5 #1 - ASCII bar graphs DWITE 3 66.2% 136
ECOO '14 R1 P2 - Orphan Black ECOO 5p 66.1% 35
WC '17 Contest 1 J1 - Canadian Accent Woburn Challenge 3 66.0% 559
WC '18 Contest 2 J2 - This Message will Self-Destruct Woburn Challenge 3p 65.9% 222
DWITE '09 R4 #1 - Social Media Overload DWITE 3 65.9% 100
Ternary Search Tree Uncategorized 5 65.9% 20
WC '17 Contest 4 J1 - Fight or Flight Woburn Challenge 3 65.9% 328
SAC '22 Code Challenge 5 P1 - Querying Plants SAC Coding Challenge 3 65.6% 227
COCI '18 Contest 6 #1 Lun COCI 5p 65.5% 19
UCRPC F21 A - Senseless Census ICPC 5 65.5% 88
Amplitude Hackathon '23 Practice Problem 4 - Gigatron Autoscaling Uncategorized 3p 65.5% 28
WC '15 Contest 2 J2 - The Empire Strikes Back Woburn Challenge 3 65.3% 295
COCI '15 Contest 6 #1 Bela COCI 5 65.3% 69
WC '16 Contest 4 J1 - Anyone Can Be Anything Woburn Challenge 5p 65.1% 85
JOI '16 Final P1 - Foehn Phenomena JOI 10p 65.1% 20
DMOPC '14 Contest 5 P2 - Longest Tunnel DMOPC 3p 65.1% 749
Magic Sequence Olympiads School 7p 64.9% 92
DMOPC '19 Contest 6 P0 - Trivial Math DMOPC 3 64.8% 585
COCI '06 Contest 2 #4 Sjecišta COCI 7 64.7% 397
COCI '07 Contest 2 #1 Bijele COCI 3 64.3% 619
BlueBook - Exact Divisors BlueBook 3 64.2% 977
WOSS Dual Olympiad 2021 J2/S1: Secret Formula Seasonal 3 64.1% 263
DWITE '08 R1 #1 - LaNDscAPE ii DWITE 3 64.1% 54
WC '18 Contest 2 J1 - Alternate Access Woburn Challenge 3p 64.0% 128
ECOO '21 P3 - Quintessential Questions ECOO 3p 64.0% 221
Waterloo 2022 Fall D - Course Selection Waterloo Local 5 63.7% 50
Facebook Hacker Cup '19 Final Round P6 - Temporal Revision FHC 40p 63.6% 5
DWITE '06 R5 #4 - Connect-4 DWITE 7 63.6% 40
Google Code Jam '09 Qualification Round Problem A - Alien Language Google Code Jam 5p 63.6% 5
Educational DP Contest AtCoder R - Walk Uncategorized 15 63.5% 132
DMOJ Capture The Flag '20 F1 - RGB CTF 3 63.5% 142
DWITE '09 R3 #2 - Rounding to Fibonacci DWITE 5 63.4% 171
COCI '11 Contest 2 #1 Najboljih 5 COCI 5p 63.4% 39
DWITE '08 R2 #4 - Big shiny tunes DWITE 7 63.3% 80
DMOPC '16 Contest 3 P0 - Negative Feedback DMOPC 3 63.1% 506
Summer Institute '17 Contest 1 P10 - Trading Cards SIUCF 3 63.0% 140
COCI '17 Contest 5 #1 Olivander COCI 5p 62.9% 61
COCI '20 Contest 4 #1 Pizza COCI 5p 62.8% 151
SAC '22 Code Challenge 4 Junior P1 - Obligatory DeMello Problem SAC Coding Challenge 3 62.8% 254
COCI '17 Contest 3 #1 Aron COCI 3 62.7% 102
BlueBook - Multiple BlueBook 3 62.7% 1443
Another Contest 4 Problem 5 - Prime Time Television ACC 0 62.6% 157
UCC Coding Competition '20 P1 - Snowstorm Uncategorized 3 62.6% 157