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Problem Category Points AC % ▾ Users
CCC '24 S1 - Hat Circle CCC 3p 69.1% 482
Max's Anger Contest Series 2 P2 - Password Anger Seasonal 5p 69.0% 150
DWITE '09 R3 #4 - Spiral Out DWITE 7 69.0% 17
SAC '22 Code Challenge 1 P1 - That Teacher SAC Coding Challenge 3 68.9% 599
COCI '22 Contest 1 #1 Desni Klik COCI 5p 68.9% 141
ETSR '23 Online Round 2 Problem 1 - Pencil Uncategorized 3p 68.9% 144
COCI '10 Contest 6 #2 Uspon COCI 5p 68.8% 49
DMOPC '20 Contest 1 P1 - Victor Gets Quizzed DMOPC 3 68.8% 524
DWITE '10 R1 #3 - Power tiles DWITE 5 68.7% 135
UCRPC F21 B - Lost in the Shuffle ICPC 3 68.7% 87
SAC '22 Code Challenge 3 Junior P3 - Normal Probabilities SAC Coding Challenge 3p 68.7% 251
WOSS Dual Olympiad 2023 J1: Minimum Price Uncategorized 3 68.6% 173
WC '17 Contest 1 J2 - How's the Weather? Woburn Challenge 3 68.6% 3756
Google Code Jam '08 Round 1A Problem A - Minimum Scalar Product Google Code Jam 5p 68.4% 11
BSSPC '22 P1 - Bubble Tea Tracker Uncategorized 3 68.4% 540
SAC '22 Code Challenge 5 Junior P1 - Monkey, Type! SAC Coding Challenge 3 68.3% 252
A Math Contest P15 - Matrix Fixed Point Uncategorized 20 68.3% 30
ECOO '16 R3 P4 - Cuthbert's Calculator ECOO 15p 68.2% 5
DMOPC '19 Contest 5 P0 - Concurrent Competitor Counting DMOPC 3 68.2% 395
COCI '15 Contest 3 #1 Pot COCI 5 68.1% 208
DMOJ Capture The Flag '20 G1 - Sanity Check CTF 3 68.1% 340
COCI '09 Contest 2 #1 Faktor COCI 3p 67.9% 324
COCI '12 Contest 6 #1 Baka COCI 3p 67.7% 88
COCI '16 Contest 5 #1 Tuna COCI 3p 67.7% 62
COCI '20 Contest 6 #1 Bold COCI 5p 67.7% 163
DWITE '08 R3 #3 - Unicorns and Teaspoons DWITE 5 67.7% 31
DWITE '07 R2 #3 - Floor Plan DWITE 7 67.5% 124
SAC '22 Code Challenge 3 Junior P2 - Normal Lines SAC Coding Challenge 3p 67.4% 283
WC '18 Contest 1 J2 - Making the Cut Woburn Challenge 3p 67.2% 204
WC '17 Contest 2 J1 - The Rings of Power Woburn Challenge 3 67.1% 304
COCI '23 Contest 4 #1 Bingo COCI 5p 67.0% 65
ICPC SWERC 2017 F - Shattered Cake ICPC 3 66.9% 55
ECOO '12 R2 P4 - Lo Shudoku ECOO 10p 66.7% 5
ECOO '12 R3 P4 - Splitsville ECOO 10p 66.7% 2
Waterloo 2017 Fall E - English Waterloo Local 15p 66.7% 4
COCI '09 Contest 6 #1 Kajak COCI 5p 66.7% 82
COCI '10 Contest 3 #6 Mono COCI 12p 66.7% 6
NOIP '18 Junior P1 - Title Statistics China NOI 3p 66.7% 52
Google Code Jam '08 Round 1A Problem B - Milkshakes Google Code Jam 7p 66.7% 2
Google Code Jam '14 Round 1A Problem A - Charging Chaos Google Code Jam 7p 66.7% 2
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 '16 Round 1A Problem B - Rank and File Google Code Jam 7p 66.7% 2
Google Code Jam '16 Round 1A Problem C - BFFs Google Code Jam 10p 66.7% 2
Google Code Jam '17 Qualification Round Problem C - Bathroom Stalls Google Code Jam 10p 66.7% 2
Google Code Jam '17 Round 1A Problem B - Ratatouille Google Code Jam 12 66.7% 3
Google Code Jam '18 Round 1A Problem A - Waffle Choppers Google Code Jam 10p 66.7% 4
Google Code Jam '22 Round 1B Problem B - Controlled Inflation Google Code Jam 10p 66.7% 4
Google Code Jam '22 Round 3 Problem C - Mascot Maze Google Code Jam 17p 66.7% 3
Waterloo 2001 Winter B - Tight words Waterloo Local 7 66.7% 4