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Problem Category Points AC % Users
List Minimum (Hard) Uncategorized 5 35.8% 1661
List Minimum (Harder) Uncategorized 7 0.2% 5
Lexicographically Least Substring Uncategorized 5 46.0% 616
Lexicographically Least Substring (Hard) Uncategorized 15 11.3% 183
Next Prime Classics 5 19.9% 2175
Next Prime (Hard) Classics 15 7.9% 159
String Finding Uncategorized 5 15.6% 418
String Finding - Hacking Uncategorized 10 6.1% 16
Back From Summer '17 P1: Pithy Pastimes Seasonal 3 39.2% 780
Back From Summer '17 P2: Crayola Lightsaber Seasonal 7 25.2% 589
Back From Summer '17 P3: Basketball Dodgeball Seasonal 7 19.4% 79
Back From Summer '17 P4: Pair Programming Seasonal 12p 27.4% 50
Back From Summer '17 P5: Confusing Codeforces Contest Seasonal 25p 14.0% 29
Back From Summer '17 P6: Crowded Cities Seasonal 20p 11.9% 120
Back From Summer '19 P1: Winnie's Orphans Seasonal 3 43.5% 332
Back From Summer '19 P2: Straying From God's Light Seasonal 7p 17.5% 170
Back From Summer '19 P3: ASDFGHJKL Seasonal 10p 8.6% 60
Back From Summer '19 P4: Wesley And Cake Seasonal 25p 23.1% 8
Back From Summer '19 P5: ABC123E Seasonal 17p 30.1% 32
Back From Summer '19 P6: Composite Zeyu Seasonal 15p 37.6% 41
Bulgarian OI '09 P1 - Minesweeper Bulgarian OI 10 42.3% 65
Bulgarian OI '09 P2 - Boxen Bulgarian OI 12 41.5% 186
Bulgarian OI '09 P4 - Frogs Bulgarian OI 12p 24.2% 128
Bulgarian OI '09 P5 - Special Sequence Bulgarian OI 30p 14.0% 27
Bulgarian OI '09 P6 - Diamonds Bulgarian OI 12 22.9% 48
Binary Uncategorized 5 24.1% 886
Bill's Binoculars Uncategorized 5 39.7% 51
Bit Combinations Uncategorized 7 34.8% 16
Fast Bit Duplication Uncategorized 10 32.3% 48
Bitmask Magic Uncategorized 15p 30.0% 22
Balkan OI '11 P1 - Two Circles Balkan OI 30p 11.5% 11
Balkan OI '11 P2 - Decrypt Balkan OI 15p 57.9% 9
Balkan OI '11 P3 - Medians Balkan OI 12p 27.6% 37
Balkan OI '11 P4 - Compare Balkan OI 25p 28.8% 17
Balkan OI '11 P5 - Time Is Money Balkan OI 30p 16.1% 46
Balkan OI '11 P6 - Trapezoids Balkan OI 20p 26.3% 22
A Block Game Uncategorized 3 40.2% 101
Bob Hates Triangles Uncategorized 7 48.7% 85
Bob's Rocks Uncategorized 5 47.4% 153
Bob's Temple Uncategorized 5 55.2% 69
Bohemian Rhaksody Uncategorized 45p 5.0% 10
Boolean Uncategorized 3 50.4% 2348
Boxdropper Uncategorized 20p 21.8% 19
Stacking Boxes Uncategorized 5 34.9% 81
Boxlings Uncategorized 15p 16.8% 42
Union Laser Uncategorized 25p 35.0% 3
BPC 1 J1 - Facial Recognition Uncategorized 3 58.9% 430
BPC 1 J2 - Cake Uncategorized 3 34.7% 207
BPC 1 J3 - Group Project Uncategorized 5 43.7% 219
BPC 1 J4 - Assignment of the Year Uncategorized 10p 10.1% 45