Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▾ Users
NOI '15 P6 - Farm China NOI 25p 6.1% 6
Spring Coding Bowl '22 P4 - Circle Game Uncategorized 15p 6.7% 10
Spring Coding Bowl '22 P5 - Temple Placement Uncategorized 15p 13.8% 7
NOI '20 P1 - Delicacy China NOI 25p 12.6% 30
NOI '20 P2 - Destiny China NOI 25p 16.4% 12
NOI '20 P3 - Tears China NOI 40p 9.0% 8
Still Too Simple Seasonal 10 18.7% 43
Persuasion Uncategorized 12 29.7% 24
An Animal Contest 3 P7 - Monkey Lasers (Up Version) AAC 25p 23.3% 9
NOI '20 P4 - Dish China NOI 20p 7.6% 20
NOI '20 P5 - Surreal China NOI 17p 10.2% 17
NOI '20 P6 - Road China NOI 45p 3.3% 1
Prefix Digits Uncategorized 7 15.1% 62
K-th Minimum Number Uncategorized 17 45.5% 32
Dynamic Sum Uncategorized 15 14.6% 16
NOI '21 P1 - Light Heavy Edges China NOI 25p 8.7% 25
NOI '21 P2 - Intersecting Paths China NOI 25p 22.9% 17
NOI '21 P3 - Celebration China NOI 25p 9.7% 22
NOI '21 P4 - Quantum Communication China NOI 25p 9.4% 22
NOI '21 P5 - The Locked Box China NOI 25p 11.8% 9
NOI '21 P6 - Robot Game China NOI 25p 22.4% 4
Factorial Calculator TLE 7p 18.3% 79
CCO '01 P4 - Breaking Level (Standard I/O) CCO 12 7.8% 37
Fixing Shirts Uncategorized 15 18.4% 24
String Finding - Hacking Uncategorized 10 6.1% 16
UCRPC F21 D - Stake Your Claim ICPC 10 54.9% 37
UCRPC F21 H - Fetch Quest ICPC 12p 13.7% 11
UCRPC F21 B - Lost in the Shuffle ICPC 3 68.7% 87
UCRPC F21 I - Sphere Mongers ICPC 15p 5.8% 6
UCRPC F21 C - Maths of Glory ICPC 5 48.6% 68
UCRPC F21 A - Senseless Census ICPC 5 66.0% 90
UCRPC F21 F - Trip Navigator ICPC 12p 39.6% 33
UCRPC F21 E - Feeding Friendsy ICPC 7p 13.2% 20
UCRPC F21 G - Snack Attack ICPC 10p 17.9% 21
Bill's Binoculars Uncategorized 5 39.7% 51
Bruce String Uncategorized 12p 23.2% 15
NOIP '18 P1 - Paving Roads China NOI 7p 50.8% 187
NOIP '18 P2 - Currency System China NOI 10p 42.8% 114
NOIP '18 P3 - Constructing Tracks China NOI 17p 21.1% 37
NOIP '18 P4 - Travel China NOI 10p 17.7% 17
NOIP '18 P5 - Grid-filling Game China NOI 20p 15.4% 5
NOIP '18 P6 - Defending the Kingdom China NOI 25p 13.0% 5
NOIP '21 P1 - Saying Numbers China NOI 10p 31.0% 110
NOIP '21 P2 - Sequence China NOI 20p 28.7% 62
NOIP '21 P3 - Variance China NOI 20p 12.6% 39
NOIP '21 P4 - Chess China NOI 20p 20.8% 7
A Long Problem Uncategorized 0p 58.7% 43
Checker Number Uncategorized 7 18.8% 29
WOSS Dual Olympiad 2021 J1: Water Classification Seasonal 3 49.8% 275
WOSS Dual Olympiad 2021 J2/S1: Secret Formula Seasonal 3 64.1% 263