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Problem Category Points AC % ▾ Users
Google Code Jam '22 Qualification Round Problem A - Punched Cards Google Code Jam 3p 44.1% 12
TSOC '16 Contest 1 #3 - You and Crossroads TSOC 5p 44.1% 106
COCI '11 Contest 3 #1 Digitalna COCI 3p 44.1% 26
COCI '07 Contest 1 #5 Srednji COCI 12p 44.0% 258
Summer Institute '17 Contest 1 P2 - Bernard SIUCF 10 44.0% 47
COCI '17 Contest 5 #5 Pictionary COCI 17p 44.0% 19
IOI '95 Practice Task 2 - Word Chains IOI 12 43.9% 54
Segment Tree Practice 2 Uncategorized 12 43.9% 29
Baltic OI '15 P5 - Hacker Baltic OI 15p 43.9% 14
COCI '10 Contest 4 #1 Avion COCI 3p 43.9% 74
Busy Schedule Uncategorized 10 43.8% 55
DWITE '12 R5 #1 - Travel Time DWITE 5 43.8% 32
ECOO '18 R1 P3 - Missing Art ECOO 7p 43.8% 92
ECOO '12 R3 P2 - Jewelry Tips ECOO 12p 43.8% 5
DWITE '07 R3 #3 - Playlist DWITE 7 43.8% 146
COCI '15 Contest 6 #2 Putovanje COCI 5p 43.8% 35
NOI '98 P3 - Software Installation Disk China NOI 15p 43.8% 3
COCI '10 Contest 5 #3 Brodovi COCI 5p 43.8% 21
Hungry Uncategorized 5p 43.7% 111
DWITE '12 R1 #3 - Costume Party DWITE 5 43.7% 50
BPC 1 J3 - Group Project Uncategorized 5 43.7% 219
UCC Coding Competition '20 P4 - Bubble Tea Uncategorized 7p 43.7% 222
DMPG '19 B4 - Braille DMOPC 5 43.7% 192
Summer Institute '17 Contest 1 P4 - Clips of Video SIUCF 20 43.7% 35
ACM U of T Tryouts C3 B - A Careful Reply ICPC 3 43.6% 373
ICPC NAQ 2016 A - A New Alphabet ICPC 3 43.5% 130
DMOPC '18 Contest 4 P3 - Dr. Henri and Ionization DMOPC 10p 43.5% 116
DWITE '08 R1 #5 - Moving Stuff in Boxes DWITE 7 43.5% 18
Mock CCO '18 Contest 4 Problem 2 - Sunken Colonies Mock CCO 15p 43.5% 38
COCI '12 Contest 4 #1 Orehnjaca COCI 5p 43.5% 18
Back From Summer '19 P1: Winnie's Orphans Seasonal 3 43.5% 332
DWITE '09 R7 #1 - Binary Equipment DWITE 3 43.5% 105
Tropical Bananas Uncategorized 10p 43.5% 51
DMOPC '14 Contest 6 P2 - GO Faster DMOPC 5p 43.4% 249
COCI '16 Contest 5 #4 Ronald COCI 12p 43.4% 28
DMOPC '21 Contest 10 P5 - Number Theory DMOPC 20p 43.4% 140
Educational DP Contest AtCoder H - Grid 1 Uncategorized 7 43.4% 655
CCO '97 P2 - Alien Invasion CCO 10 43.4% 54
CCC '11 J3 - Sumac Sequences CCC 5 43.3% 2867
DWITE '08 R4 #2 - Tic Tac Win DWITE 5 43.3% 73
WC '17 Finals J1 - Cownterintelligence Woburn Challenge 5p 43.3% 57
CCC '05 S1 - Snow Calls CCC 5 43.3% 2275
DMOPC '15 Contest 6 P4 - Line Graph DMOPC 10p 43.3% 377
CEOI '16 P2 - Kangaroo CEOI 20p 43.3% 64
CCC '08 J2 - Do the Shuffle CCC 3 43.2% 3411
COCI '23 Contest 2 #1 Pahuljice COCI 5p 43.2% 60
Educational DP Contest AtCoder B - Frog 2 Uncategorized 7 43.1% 845
CCC '98 S2 - Cross Number Puzzle CCC 5 43.1% 494
BlueBook - Cross Country BlueBook 3 43.1% 1279
Google Kickstart '17 Round C Problem A - Ambiguous Cipher Google Kick Start 7p 43.0% 31