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Problem Category Points AC % Users
Bulgarian OI '09 P2 - Boxen Bulgarian OI 12 41.5% 189
Bulgarian OI '09 P4 - Frogs Bulgarian OI 12p 23.4% 130
Bulgarian OI '09 P6 - Diamonds Bulgarian OI 12 22.6% 55
Fast Bit Duplication Uncategorized 10 32.3% 48
Bitmask Magic Uncategorized 15p 29.4% 24
Balkan OI '11 P2 - Decrypt Balkan OI 15p 52.6% 8
Balkan OI '11 P3 - Medians Balkan OI 12p 28.5% 41
Boxlings Uncategorized 15p 17.1% 45
BPC 1 J4 - Assignment of the Year Uncategorized 10p 10.1% 49
BPC 1 J5 - Set Uncategorized 10 26.2% 21
BPC 1 S2 - Train Commute Uncategorized 12p 6.7% 50
BPC 1 S3 - Bus Stops Uncategorized 17p 12.9% 25
Brazilian IOI TST '19 Day 1 - Secret Santa Brazil OI 17p 19.7% 22
Bruce's Brittle Bridges Uncategorized 12p 31.6% 70
Bruce String Uncategorized 12p 22.0% 15
Polynomial Time Boolean Satisfiability Uncategorized 15p 37.5% 49
Fast Search Uncategorized 15p 27.3% 111
Battleships Uncategorized 10p 11.4% 126
BSSPC '21 J6 - Lakshy and Orz Trees Uncategorized 12 16.2% 85
BSSPC '21 S4 - Child Prodigy Chadstin Uncategorized 17p 6.7% 25
BSSPC '22 P6 - Permutations & Primogems Uncategorized 10p 16.9% 112
BSSPC '22 P7 - Exec Team Applications Uncategorized 10p 22.9% 90
BSSPC '22 P8 - Bayview's RGB Gaming PC Uncategorized 10 21.7% 88
Baltic OI '01 P1 - Postman Baltic OI 10p 18.7% 24
Baltic OI '01 P4 - Knights Baltic OI 17p 14.8% 8
Baltic OI '01 P5 - Mars Maps Baltic OI 15p 14.7% 30
Baltic OI '01 P6 - Teleports Baltic OI 10p 36.5% 24
Baltic OI '02 P1 - Speed Limits Baltic OI 12p 26.3% 16
Baltic OI '02 P2 - Tennis Club Baltic OI 12p 35.3% 15
Baltic OI '02 P3 - Triangles Baltic OI 12p 18.0% 8
Baltic OI '02 P4 - Bicriterial Routing Baltic OI 12 20.8% 9
Baltic OI '03 P1 - Barrel Baltic OI 10p 9.3% 6
Baltic OI '03 P2 - Gems Baltic OI 12p 48.1% 16
Baltic OI '03 P3 - Table Baltic OI 10p 12.5% 3
Baltic OI '03 P4 - The Gangs Baltic OI 12p 41.1% 44
Baltic OI '03 P5 - Lamps Baltic OI 15p 29.9% 17
Baltic OI '04 P2 - Scales Baltic OI 10p 50.0% 5
Baltic OI '04 P5 - Rectangles Baltic OI 10p 8.9% 5
Baltic OI '05 P1 - Camouflaged camp Baltic OI 12 43.5% 43
Baltic OI '05 P3 - Maze Baltic OI 12 30.0% 50
Baltic OI '05 P4 - Ancient Manuscript Baltic OI 12 30.0% 19
Baltic OI '05 P5 - Bus Trip Baltic OI 17 48.2% 20
Baltic OI '06 P1 - Bitwise Expressions Baltic OI 15p 37.8% 9
Baltic OI '06 P2 - Coin Collector Baltic OI 12 18.8% 24
Baltic OI '07 P3 - Sound Baltic OI 10p 32.9% 304
Baltic OI '07 P4 - Building a Fence Baltic OI 12p 19.2% 5
Baltic OI '07 P5 - Connected Points Baltic OI 15p 36.1% 9
Baltic OI '07 P6 - Sequence Baltic OI 12p 27.2% 30
Baltic OI '08 P2 - Gates Baltic OI 15p 16.7% 1
Baltic OI '08 P4 - Elections Baltic OI 12p 34.3% 18