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Problem Category Points AC % Users
List Minimum (Easy) Uncategorized 3p 11.9% 963
List Minimum (Hard) Uncategorized 5 36.4% 1758
List Minimum (Harder) Uncategorized 7 0.2% 5
Lexicographically Least Substring Uncategorized 5 46.5% 676
Lexicographically Least Substring (Hard) Uncategorized 15 11.5% 211
Next Prime Classics 5 20.3% 2410
Next Prime (Hard) Classics 15 9.2% 199
String Finding Uncategorized 5 16.9% 551
String Finding - Hacking Uncategorized 10 5.3% 20
Back From Summer '17 P1: Pithy Pastimes Seasonal 3 39.7% 820
Back From Summer '17 P2: Crayola Lightsaber Seasonal 7 26.0% 644
Back From Summer '17 P3: Basketball Dodgeball Seasonal 7 19.7% 84
Back From Summer '17 P4: Pair Programming Seasonal 12p 26.8% 54
Back From Summer '17 P5: Confusing Codeforces Contest Seasonal 25p 14.3% 36
Back From Summer '17 P6: Crowded Cities Seasonal 20p 10.6% 148
Back From Summer '19 P1: Winnie's Orphans Seasonal 3 43.8% 364
Back From Summer '19 P2: Straying From God's Light Seasonal 7p 17.8% 176
Back From Summer '19 P3: ASDFGHJKL Seasonal 10p 8.8% 69
Back From Summer '19 P4: Wesley And Cake Seasonal 25p 19.2% 9
Back From Summer '19 P5: ABC123E Seasonal 17p 33.2% 43
Back From Summer '19 P6: Composite Zeyu Seasonal 15p 38.5% 46
Bulgarian OI '09 P1 - Minesweeper Bulgarian OI 10 42.9% 72
Bulgarian OI '09 P2 - Boxen Bulgarian OI 12 40.9% 197
Bulgarian OI '09 P4 - Frogs Bulgarian OI 12p 21.3% 139
Bulgarian OI '09 P5 - Special Sequence Bulgarian OI 15p 14.6% 41
Bulgarian OI '09 P6 - Diamonds Bulgarian OI 12 23.6% 62
Binary Uncategorized 5 24.2% 950
Bill's Binoculars Uncategorized 5 39.9% 59
Bit Combinations Uncategorized 7 19.2% 31
Fast Bit Duplication Uncategorized 10 31.9% 49
Bitmask Magic Uncategorized 15p 29.8% 25
Balkan OI '11 P1 - Two Circles Balkan OI 30p 12.6% 14
Balkan OI '11 P2 - Decrypt Balkan OI 15p 50.0% 10
Balkan OI '11 P3 - Medians Balkan OI 12p 24.7% 59
Balkan OI '11 P4 - Compare Balkan OI 25p 24.2% 18
Balkan OI '11 P5 - Time Is Money Balkan OI 30p 16.2% 57
Balkan OI '11 P6 - Trapezoids Balkan OI 20p 31.3% 41
A Block Game Uncategorized 3 38.7% 123
Bob Hates Triangles Uncategorized 7 47.7% 105
Bob's Rocks Uncategorized 5 46.7% 191
Bob's Temple Uncategorized 5 53.6% 81
Bohemian Rhaksody Uncategorized 45p 4.8% 13
Boolean Uncategorized 3 50.1% 2500
Boxdropper Uncategorized 20p 22.0% 20
Stacking Boxes Uncategorized 5 31.9% 98
Boxlings Uncategorized 15p 17.1% 58
Union Laser Uncategorized 25p 35.3% 4
BPC 1 J1 - Facial Recognition Uncategorized 3 55.4% 589
BPC 1 J2 - Cake Uncategorized 3 36.1% 242
BPC 1 J3 - Group Project Uncategorized 5 44.7% 267