Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Types Points AC % Users
Mock CCO '17 Problem 2 - Penetrating Power Mock CCO Data Structures 17p 25.8% 172
Mock CCO '17 Problem 3 - Connection Mock CCO Divide and Conquer, Graph Theory 20p 12.6% 39
Mock CCO '17 Problem 4 - Guards Mock CCO Graph Theory 15p 17.6% 54
Mock CCO '17 Problem 5 - Blitzkrieg Mock CCO Graph Theory 17p 13.0% 13
Mock CCO '17 Problem 6 - Dire Consequences Mock CCO Data Structures, Dynamic Programming 20 24.0% 25
Mock CCO '19 Contest 1 Problem 4 - A Chemistry Problem Mock CCO Graph Theory, Intermediate Math 15p 15.8% 15
Mock CCO '19 Contest 1 Problem 5 - A Tree Problem Mock CCO Graph Theory, Intermediate Math 25p 13.9% 9
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem Mock CCO Geometry 15p 28.1% 18
Mock CCO '19 Contest 2 Problem 1 - A Dynamic Connectivity Problem Mock CCO Graph Theory 15p 31.0% 71
Mock CCO '19 Contest 2 Problem 2 - A Simulation Problem Mock CCO Intermediate Math 15p 10.7% 8
Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem Mock CCO Graph Theory 15p 6.2% 7
Mock CCO '19 Contest 2 Problem 4 - A Geometry Problem Mock CCO Recursion, Simple Math 5p 11.3% 7
Mock CCO '19 Contest 2 Problem 5 - A Geometry Problem Mock CCO Geometry 12p 4.3% 2
Mock CCO '19 Contest 2 Problem 6 - A Fundraising Problem Mock CCO Dynamic Programming, Graph Theory 12p 17.1% 36
MCIPC Contest 1 P1 - Factoring Uncategorized Brute Force 3 26.5% 84
MCIPC Contest 1 P2 - Infinite Chessboard Uncategorized Simple Math 3 49.7% 78
MCIPC Contest 1 P1 - Cypher Uncategorized Implementation 5p 36.1% 57
MCIPC Contest 1 P4 - Snack Line Uncategorized Divide and Conquer, Simulation 7p 15.8% 15
MCIPC Contest 1 P5 - Rainwater Uncategorized Graph Theory 7 21.7% 18
MCIPC Contest 2 P1 - Super Mega Snowball Uncategorized Implementation 3 38.8% 47
MCIPC Contest 2 P2 - Icicles Uncategorized Implementation 3 38.5% 62
MCIPC Contest 2 P3 - Snowy Streets Uncategorized Data Structures 5p 29.4% 55
MCIPC Contest 2 P4 - Wreath Uncategorized Data Structures 7p 10.4% 9
MCIPC Contest 2 P5 - Holiday Chocolates Uncategorized Graph Theory 10p 26.0% 7
MCIPC Contest 2 P6 - Block Tower Uncategorized Dynamic Programming, Game Theory 12p 11.6% 9
MEC '16 P1 - Bat-Doctor Seasonal Simple Math 5p 25.5% 41
MEC '16 P2 - Conveyor Belt Seasonal String Algorithms 5p 20.8% 55
MEC '16 P3 - Getting Good at Programming Seasonal Dynamic Programming 10p 29.7% 314
MEC '16 P4 - Circuitry Seasonal Graph Theory 15p 16.2% 21
MEC '16 P6 - Instruments of the Ghostwriters Seasonal Brute Force, Data Structures 10p 11.3% 15
Median Modulo Uncategorized Intermediate Math 15p 7.3% 7
Meta Classics Graph Theory 12p 34.1% 12
Miniature Sudoku Uncategorized Brute Force 7 30.7% 22
Miracle Sort Seasonal Implementation 3 24.9% 378
Maximum Independent Subset Uncategorized Ad Hoc, Greedy Algorithms 15p 12.6% 10
Multiplication Improvement Uncategorized Implementation 5 50.5% 240
MMCC '14 P1 - Tenri Uncategorized Dynamic Programming 17p 23.2% 72
MMCC '14 P2 - Kirito Uncategorized Data Structures, String Algorithms 20p 26.1% 154
MMCC '14 P3 - Esdeath Uncategorized Graph Theory, Greedy Algorithms 15p 14.9% 208
MMCC '15 P1 - Inaho Uncategorized Data Structures, Graph Theory 15p 17.7% 242
MMCC '15 P2 - Akame Uncategorized Data Structures, Geometry 25p 15.5% 46
MMCC '15 P3 - Momoka Uncategorized Data Structures, String Algorithms 25p 10.9% 9
MMM '14 A - Distinct Prime Factors Uncategorized Simple Math 7 26.7% 240
MMM '14 B - Benergy Transfer Uncategorized Simple Math 10 38.9% 26
MMM '14 C - Pie Shop Uncategorized Uncategorized 17p 16.6% 29
MMM '14 D - Kuuhaku Numbers Uncategorized Uncategorized 25p 10.0% 10
MMM '14 E - English Essay Uncategorized Uncategorized 30p 1.5% 1
MMM '14 F - Electricity Grid Uncategorized Uncategorized 25p 12.5% 4
MMM '14 G - Campfire Cooking Uncategorized Data Structures 40p 2.7% 3
MMM '14 H - Lift Control Uncategorized Uncategorized 25p 71.8% 3