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Problem Category Points AC % ▾ Users
DWITE '12 R5 #5 - Pattern Lock DWITE 7 47.7% 21
ECOO '13 R1 P2 - The Luhn Algorithm ECOO 5p 47.7% 366
COCI '08 Contest 1 #1 Skocimis COCI 5 47.6% 487
DWITE '11 R4 #5 - Comet Vomit DWITE 12 47.6% 14
Pyramid Puzzle Uncategorized 10p 47.6% 4
MWC '15 #6 P1: Regpo MWC 3 47.6% 160
Baltic OI '17 P2 - Toll Baltic OI 20p 47.6% 40
IOI '97 P3 - The Toxic iShongololo IOI 20p 47.5% 7
CCC '22 J2 - Fergusonball Ratings CCC 3 47.5% 2682
Bob's Rocks Uncategorized 5 47.4% 153
CCC '17 S1 - Sum Game CCC 3 47.3% 3208
HCI '16 - HelloWorld_ex Uncategorized 0p 47.3% 297
CCC '09 J1 - ISBN CCC 3 47.3% 3692
COCI '09 Contest 3 #2 Slatkisi COCI 5 47.3% 147
CCC '24 J3 - Bronze Count CCC 5p 47.3% 476
Cheerio Contest 3 P1 - Wet Floor Uncategorized 5p 47.3% 434
Yet Another Contest 4 P1 - Snap YAC 5p 47.2% 263
CCO '96 P4 - Where's Waldorf? CCO 7 47.2% 81
Sorting Classics 3 47.2% 3877
COCI '08 Contest 2 #3 Perket COCI 7 47.2% 585
COCI '10 Contest 3 #1 Tablica COCI 3p 47.1% 59
DMOPC '14 Contest 6 P4 - Bus Jam DMOPC 10p 47.1% 182
CCC '14 S1 - Party Invitation CCC 5 47.1% 3524
DMOPC '18 Contest 3 P0 - Bob and ICS Class DMOPC 3p 47.1% 210
ICPC NAQ 2016 E - Dots and Boxes ICPC 20 47.1% 5
Greater New York Regional 2012 - Mystery ICPC 5 47.1% 23
JOI '20 Spring Camp Day 4 P1 - Capital City JOI 20 47.1% 13
Wesley's Anger Contest 1 Problem 4 (Easy Version) - A Red-Black Tree Problem WAC 15p 47.0% 50
A Math Contest P3 - LIS Reconstruction Uncategorized 7 47.0% 160
CCC '07 J1 - Who is in the Middle? CCC 3 47.0% 9173
DMOPC '15 Contest 5 P2 - D-Mails DMOPC 5p 47.0% 114
Another Contest 8 Problem 1 - Trash Push ACC 3 47.0% 333
Educational DP Contest AtCoder G - Longest Path Uncategorized 10 47.0% 462
SMAC 08/09 (Oct) #1 - Eliminanagram Uncategorized 5 47.0% 115
Baltic OI '03 P2 - Gems Baltic OI 12p 46.9% 14
COCI '22 Contest 5 #3 Logaritam COCI 12p 46.9% 49
Primes Uncategorized 3 46.9% 1175
Another Contest 8 Problem 2 - Unnecessary Trash Push ACC 3 46.9% 268
WC '15 Contest 2 S1 - The Phantom Menace Woburn Challenge 7 46.8% 122
CCC '11 J5 - Unfriend CCC 7 46.8% 1003
Richmond Green P4 - HEIGHT Uncategorized 7p 46.8% 219
COCI '17 Contest 5 #4 Karte COCI 15p 46.8% 16
DWITE '08 R4 #4 - Shortest path around v2 DWITE 7 46.8% 157
CERC '07 B - Strange Billboard ICPC 10p 46.8% 39
DMOPC '18 Contest 2 P0 - Mimi and Video Games DMOPC 3 46.7% 422
DMOPC '18 Contest 1 P0 - Sorting DMOPC 3 46.7% 561
ECOO '15 R2 P3 - Lucas' Other Tower ECOO 10p 46.7% 308
ECOO '14 R3 P1 - Substitute Teacher ECOO 5p 46.7% 21
CCO '97 P5 - Space Aliens CCO 10 46.7% 3
CCO '98 P6 - Derek's Dilemma CCO 12 46.7% 4