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Problem Category Points ▾ AC % Users
Balkan OI '11 P5 - Time Is Money Balkan OI 30p 16.1% 46
DMOPC '18 Contest 3 P6 - Bob and Suffering DMOPC 30p 20.2% 8
IOI '18 P3 - Werewolf IOI 30p 24.2% 56
DMOPC '18 Contest 2 P6 - Standing Ovation DMOPC 30p 16.5% 15
AQT's Tree Game Uncategorized 30 4.8% 14
COCI '15 Contest 5 #6 Podnizovi COCI 30p 20.7% 5
COCI '18 Contest 4 #5 Akvizna COCI 30p 31.3% 75
CEOI '17 P6 - Chase CEOI 30p 18.3% 21
Wesley's Anger Contest 1 Problem 7 - Arithmetic Subtrees WAC 30p 7.7% 8
Brandon's Cryptographically Secure Pseudorandom Number Generator Uncategorized 30p 0.8% 2
ICHB Selection Contest '17 Problem 1 - Airship Fights (Correct Version) Uncategorized 30p 9.1% 2
Triway Cup '19 Summer H - Time Traveller Imaxblue Seasonal 30 27.8% 28
CCO '19 P3 - Winter Driving CCO 30p 17.1% 65
APIO '11 P3 - Guess My Word! APIO 30p 23.9% 8
APIO '19 P2 - Bridges APIO 30p 11.0% 46
IOI '19 P3 - Rectangles IOI 30p 6.9% 25
CEOI '19 P4 - Amusement Park CEOI 30p 20.8% 7
CEOI '19 P1 - Building Skyscrapers CEOI 30p 6.9% 2
OCC '19 G4 - Willson and Fighting Olympiads School 30p 3.5% 3
OCC '19 G6 - Monkeys in a Tree Olympiads School 30p 10.0% 9
APIO '17 P1 - Land of the Rainbow Gold APIO 30p 16.3% 13
Wesley's Anger Contest 2 Problem 6 - Haunted Houses WAC 30 33.3% 6
Art Academy IV: Alice's Blazing Fury Uncategorized 30p 12.2% 4
Wesley's Anger Contest 3 Problem 6 - Zeyu's Sadness Contest 1 WAC 30p 7.5% 8
DMOPC '19 Contest 7 P6 - Bob Equilibrium DMOPC 30p 19.8% 49
DMOPC '19 Contest 6 P5 - University Math DMOPC 30p 6.6% 11
Angie and Functions (Hard) Uncategorized 30 2.1% 1
Wesley's Anger Contest 4 Problem 5 - Time Travelling Squirrels WAC 30p 7.4% 8
JOI '18 Spring Camp Day 1 P1 - Construction of Highway JOI 30p 34.0% 28
JOI '18 Spring Camp Day 1 P2 - Fences JOI 30p 50.0% 1
CCO '20 P6 - Shopping Plans CCO 30p 9.2% 40
CCO '06 P4 - CN Tower 2 CCO 30 5.4% 11
CCO '06 P5 - Domino CCO 30 3.9% 3
CCO '06 P6 - Paint by Numbers CCO 30 11.0% 9
NOI '14 P6 - Ticket Purchase China NOI 30p 13.0% 37
NOI '06 P5 - The Clever Tour Guide China NOI 30p 1.2% 7
NOI '08 P2 - Course Design China NOI 30p 7.9% 12
NOI '07 P5 - Counting Spanning Trees China NOI 30p 13.5% 11
NOI '08 P5 - Candy Rain China NOI 30p 14.7% 10
NOI '12 P5 - Food Festival China NOI 30p 20.9% 6
NOI '05 P6 - Lemon Tree Under the Moon China NOI 30 15.7% 9
NOI '07 P2 - Cash Exchange China NOI 30p 12.1% 24
NOI '05 P5 - Little H's Party China NOI 30p 2.4% 3
NOI '13 P6 - Fast Food Restaurant China NOI 30p 7.9% 11
NOI '13 P5 - Calligrapher China NOI 30p 19.4% 6
NOI '14 P3 - Deletion Game China NOI 30p 0.3% 1
NOI '11 P3 - Ali's Typewriter China NOI 30p 29.9% 24
Bulgarian OI '09 P5 - Special Sequence Bulgarian OI 30p 14.0% 27
IOI '02 P5 - Bus Terminals IOI 30p 14.8% 53
IOI '04 P6 - Empodia IOI 30p 16.8% 138