User Chaeryeong

Points breakdown

100 / 100

AC | C++20

IOI '11 P5 - Dancing Elephants

on May 2, 2025, 4:19 p.m.

40pp

weighted 100% (40pp)

93 / 100

TLE | C++20

IOI '16 P3 - Shortcut (Standard I/O)

on Jan. 6, 2025, 7:21 p.m.

37pp

weighted 95% (35pp)

100 / 100

AC | C++20

TLE '17 Contest 1 P6 - Investment

on April 15, 2025, 11:44 p.m.

35pp

weighted 90% (32pp)

360 / 360

AC | C++20

IOI '08 P3 - Fish

on Jan. 5, 2025, 10:58 p.m.

35pp

weighted 86% (30pp)

25 / 25

AC | C++20

CCO '18 P3 - Fun Palace

on May 21, 2025, 8:48 p.m.

30pp

weighted 81% (24pp)

25 / 25

AC | C++20

CCO '16 P3 - Legends

on May 3, 2025, 3:13 a.m.

30pp

weighted 77% (23pp)

100 / 100

AC | C++20

IOI '14 P6 - Holiday (Standard I/O)

on April 13, 2025, 8:51 p.m.

30pp

weighted 74% (22pp)

100 / 100

AC | C++20

UTS Open '21 P7 - April Fools

on March 20, 2025, 9:58 p.m.

30pp

weighted 70% (21pp)

25 / 25

AC | C++20

CCO '05 P6 - Windows

on March 18, 2025, 5:44 p.m.

30pp

weighted 66% (20pp)

80 / 80

AC | C++20

Google Code Jam '13 Qualification Round Problem C - Treasure

on March 17, 2025, 1:32 a.m.

30pp

weighted 63% (19pp)

Problem	Score
APIO '12 P2 - Guard	20 / 20
APIO '15 P1 - Bali Sculptures	20 / 20
APIO '15 P2 - Jakarta Skyscrapers	20 / 20
APIO '16 P1 - Boat	20 / 20
APIO '16 P2 - Fireworks	7.600 / 40
APIO '22 P2 - Game	15 / 25

Problem	Score
Baltic OI '07 P2 - Sorting	8 / 40
Baltic OI '18 P3 - Worm Worries	3 / 30
Baltic OI '19 P6 - Olympiads	20 / 20

Problem	Score
CCC '03 S4 - Substrings	15 / 15
CCC '19 J5 - Rule of Three	10 / 20
CCC '22 S3 - Good Samples	10 / 10
CCC '24 S3 - Swipe	10 / 10
CCC '25 S5 - To-Do List	17 / 17

Problem	Score
CCO '05 P6 - Windows	30 / 30
CCO '07 P5 - Particle Catcher	21.600 / 30
CCO '14 P5 - Early Exam Evacuation	20 / 20
CCO '15 P5 - Timpanist	20 / 20
CCO '16 P3 - Legends	30 / 30
CCO '16 P6 - Pirates	25 / 25
CCO '17 P1 - Vera and Trail Building	7 / 7
CCO '17 P2 - Cartesian Conquest	10.400 / 20
CCO '17 P4 - Rainfall Storage	20 / 20
CCO '17 P5 - Professional Network	8.800 / 20
CCO '18 P2 - Wrong Answer	12 / 12
CCO '18 P3 - Fun Palace	30 / 30
CCO '18 P5 - Boring Lectures	20 / 20
CCO '19 P1 - Human Error	10 / 10
CCO '19 P4 - Card Scoring	25 / 25
CCO '19 P6 - Bad Codes	20 / 20
CCO '20 P2 - Exercise Deadlines	15 / 15
CCO '20 P4 - Travelling Salesperson	25 / 25
CCO '20 P5 - Interval Collection	25 / 25
CCO '20 P6 - Shopping Plans	18 / 30
CCO '21 P1 - Swap Swap Sort	17 / 17
CCO '21 P2 - Weird Numeral System	17 / 17
CCO '21 P3 - Through Another Maze Darkly	25 / 25
CCO '21 P4 - Travelling Merchant	25 / 25
CCO '21 P5 - Bread First Search	20 / 20
CCO '22 P1 - Alternating Heights	12 / 12
CCO '22 P2 - Rainy Markets	17 / 17
CCO '22 P3 - Double Attendance	25 / 25
CCO '22 P4 - Bi-ing Lottery Treekets	20 / 20
CCO '22 P5 - Phone Plans	13.600 / 20
CCO '22 P6 - Good Game	12.600 / 35
CCO '23 P1 - Binaria	12 / 12
CCO '23 P2 - Real Mountains	17 / 17
CCO '23 P3 - Line Town	30 / 30
CCO '23 P4 - Flip it and Stick it	17 / 17
CCO '23 P5 - Travelling Trader	13.200 / 30
CCO '23 P6 - Triangle Collection	10 / 25
CCO '24 P3 - Summer Driving	9 / 25
CCO '24 P4 - Infiltration	20 / 20
CCO '24 P5 - Heavy Light Decomposition	20 / 20
CCO '24 P6 - Telephone Plans	18 / 30
CCO '25 P4 - Restaurant Recommendation Rescue	17 / 17

Problem	Score
CEOI '18 P3 - Lottery	25 / 25
CEOI '22 P1 - Abracadabra	20 / 20
CEOI '22 P2 - Homework	15 / 15
CEOI '22 P5 - Measures	11.800 / 20

User Chaeryeong

Points breakdown

AAC (20 points)

APIO (102.600 points)

Baltic OI (31 points)

Bubble Cup (20 points)

CCC (62 points)

CCO (780.200 points)

CEOI (71.800 points)

China NOI (290.150 points)

COCI (169.615 points)

DMOPC (217.950 points)

ECOO (6 points)

EGOI (77 points)

Google Code Jam (30 points)

IOI (424.840 points)

JOI (3 points)

Mock CCC (278.238 points)

Mock CCO (46.818 points)

Olympiads School (584.100 points)

Seasonal (25 points)

TLE (60 points)

Uncategorized (303.700 points)

Waterloo Local (25 points)

Woburn Challenge (25 points)

YAC (104.500 points)

Problem	Score
NOI '06 P6 - The Magical Bag	20 / 20
NOI '09 P3 - Modified Treap	20 / 20
NOI '15 P3 - Sushi Dinner	25 / 25
NOI '15 P4 - Homeric Epics	25 / 25
NOI '16 P3 - The Beauty of Cycles	25.200 / 30
NOI '17 P1 - Integers	17.600 / 20
NOI '17 P3 - Pool	27 / 30
NOI '17 P4 - Game	22.500 / 25
NOI '19 P4 - Jump	25 / 25
NOI '19 P5 - Landlords	10 / 25
NOI '21 P1 - Light Heavy Edges	25 / 25
NOI '23 P2 - Osmanthus Tree	21.250 / 25
NOIP '18 P3 - Constructing Tracks	17 / 17
NOIP '21 P3 - Variance	9.600 / 20

Problem	Score
COCI '17 Contest 3 #5 Dojave	17 / 17
COCI '17 Contest 6 #6 Vrtić	25 / 25
COCI '18 Contest 4 #5 Akvizna	4.615 / 30
COCI '19 Contest 6 #3 Konstrukcija	20 / 20
COCI '21 Contest 6 #5 Superozicija	25 / 25
COCI '22 Contest 1 #3 Berilij	17 / 17
COCI '22 Contest 1 #4 Iksevi	12 / 12
COCI '22 Contest 2 #3 Lampice	17 / 17
COCI '22 Contest 2 #4 Prijateljice	12 / 12
COI '20 #2 Cigle	20 / 20

Problem	Score
DMOPC '18 Contest 5 P5 - A Hat Problem	20 / 20
DMOPC '19 Contest 1 P0 - Range Finding	3 / 3
DMOPC '19 Contest 6 P5 - University Math	9 / 30
DMOPC '20 Contest 7 P1 - Bob and Balance	7 / 7
DMOPC '21 Contest 10 P3 - Peculiar Reflections	12 / 12
DMOPC '21 Contest 10 P4 - Bitwise Telephone	1.700 / 17
DMOPC '21 Contest 1 P1 - Partial Game	5 / 5
DMOPC '21 Contest 1 P3 - Mystery DAG	12 / 12
DMOPC '21 Contest 1 P4 - Uneven Forest	20 / 20
DMOPC '21 Contest 1 P6 - Tree Jumping	25 / 25
DMOPC '21 Contest 2 P5 - Permutations	6.250 / 25
DMOPC '21 Contest 8 P5 - Tree Building	25 / 25
DMOPC '21 Contest 8 P6 - Castle Building	12 / 40
DMOPC '22 Contest 2 P6 - Yogyakarta Elevators	25 / 25
DMOPC '23 Contest 1 P5 - Perfect Matching	25 / 25
DMPG '19 G2 - Test Marks	10 / 20

Problem	Score
EGOI '22 P1 - SubsetMex	10 / 10
EGOI '22 P2 - Lego Wall	15 / 15
EGOI '22 P3 - Social Engineering	15 / 15
EGOI '23 P4 - Bikes vs Cars	20 / 20
EGOI '23 P7 - Sopsug	17 / 17

Problem	Score
IOI '04 P2 - Hermes (Hard)	20 / 20
IOI '08 P3 - Fish	35 / 35
IOI '08 P4 - Teleporters	25 / 25
IOI '11 P5 - Dancing Elephants	40 / 40
IOI '12 P4 - Ideal City (Standard I/O)	25 / 25
IOI '13 P5 - Robots (Standard I/O)	20 / 20
IOI '14 P6 - Holiday (Standard I/O)	30 / 30
IOI '16 P3 - Shortcut (Standard I/O)	37.200 / 40
IOI '20 P3 - Carnival Tickets	20 / 20
IOI '21 P1 - Distributing Candies	30 / 30
IOI '21 P2 - Keys	25 / 25
IOI '22 P1 - Catfish Farm	25 / 25
IOI '22 P4 - Digital Circuit	25 / 25
IOI '24 P1 - Nile	15 / 15
IOI '24 P2 - Message	19.840 / 40
IOI '24 P3 - Tree	12.300 / 30
IOI '24 P6 - Sphinx's Riddle	20.500 / 25

Problem	Score
Mock CCC '20 S1 - War	3 / 3
Mock CCC '20 S2 - Flipper Redux	7 / 7
Mock CCC '20 S3 - SAM I Am	10 / 10
Mock CCC '20 S4 - Valentine's Day Shopping	20 / 20
Mock CCC '20 Contest 2 S1 - Arithmetic Hybercube	3 / 3
Mock CCC '20 Contest 2 S2 - 4D BBST on a DP	5 / 5
Mock CCC '20 Contest 2 S3 - Tree Programming	10 / 10
Mock CCC '20 Contest 2 S4 - Rotational Arrays	10 / 10
Mock CCC '20 Contest 2 S5 - Sticks	12 / 20
Mock CCC '22 2 S1 - Kaguya Wants to Let Ishigami Pass	5 / 5
Mock CCC '22 2 S2 - Kaguya Wants to Grow the Student Council	10 / 10
Mock CCC '22 2 S3 - Kaguya Wants to Analyze the Academy Anthem	12 / 12
Mock CCC '23 1 S1 - Composite Fibonacci Numbers	5 / 5
Mock CCC '23 1 S2 - Keenan Hates Triangles	5 / 5
Mock CCC '23 1 S3 - Richard The Penguin	10 / 10
Mock CCC '23 1 S4 - Roger Says Yabe	15 / 15
Mock CCC '23 1 S5 - The Obligatory Data Structures Problem	5 / 25
Mock CCC '23 2 S1 - Composite Fibonacci Numbers	3 / 3
Mock CCC '23 2 S2 - Keenan Hates Triangles	7 / 7
Mock CCC '23 2 S3 - Richard The Penguin	4 / 10
Mock CCC '23 2 S4 - Roger Says Yabe	15 / 15
Mock CCC '23 2 S5 - The Obligatory Data Structures Problem	25 / 25
Mock CCC '21 S5 - Clique and Independent Set	14.571 / 30
Riolku's Mock CCC S1 - Word Bot	3 / 3
Riolku's Mock CCC S2 - Keen Keener Sequence	7 / 7
Riolku's Mock CCC S3 - Mosey's Birthday	12 / 12
Riolku's Mock CCC S4 - Clumsy Cindy	12 / 12
Riolku's Mock CCC S5 - Keen Keener Multiset	11.667 / 25
Valentine's Day '18 S3 - Carol's Cactesian Conquest	17 / 17

Problem	Score
CCO Preparation Test 2 P2 - Forest Area	25 / 25
Mock CCO '18 Contest 3 Problem 6 - Roger Asks For More Marks	21.818 / 30

Problem	Score
OCC '19 G2 - A Guessing Game	25 / 25
OCC '19 G5 - King kobortor's Infrastructure	17 / 17
OCC '19 S5 - Partitioning	12 / 12
Game of Honesty	15 / 15
Dreaming Again	18 / 30
Waiting in Line	15 / 15
Monitoring	15 / 15
Bob's Number Matrix	15 / 15
Bob's Function	17 / 17
Bob's GCD	20 / 20
Bob's Array Expressions	25 / 25
Bob's Dominos	25 / 25
Bob's Shortest Non-common Substring	20 / 20
The Subset	20 / 20
Circular Knapsack Problem	25 / 25
Maximum Deviation Spanning Tree	12.500 / 25
Bob Sort	20 / 20
Three Subarrays	20 / 20
Bad Cut	15 / 15
Adjacent Pairs	15 / 15
Weight Assignment	25 / 25
Divisibility	20 / 20
Permutation Sorting	20 / 20
Tree Journey	12 / 12
Infinity Card Decks	15 / 15
0-1 Sequence	15 / 15
Bob's Table	20 / 20
Shortest Manhattan Diameter	9.400 / 20
String Recovery	15 / 15
Bob's Max Subarray Sum	11.200 / 25
Chasing Game	20 / 20
Longest Path in Subtree	20 / 20
Array Game	15 / 15

Problem	Score
TLE '16 Contest 6 (Mock CCC) S4 - Bubble Sort	25 / 25
TLE '17 Contest 1 P6 - Investment	35 / 35

Problem	Score
BSSPC '21 S1 - Lakshy and Palindromic Rectangle	5 / 5
BSSPC '21 S2 - Hacker Soup	7 / 7
BSSPC '21 S3 - James's Egirl Discord Status	7 / 7
BSSPC '21 S4 - Child Prodigy Chadstin	17 / 17
CPC '21 Contest 1 P6 - AQT's Break Time is Over	20 / 20
Dilhan's Computing Contest 1 P1 - The Cathedral of Learning	3 / 3
Dilhan's Computing Contest 1 P2 - Square Sum	12 / 12
Dilhan's Computing Contest 1 P3 - Soccer Court	10 / 10
Dilhan's Computing Contest 1 P4 - Increasing Sequence With Gap	17 / 17
Dilhan's Computing Contest 1 P5 - Get It Twisted, They Will Divide Us	1.700 / 17
HHPC1 P5 - Yunity Grouping Objects	17 / 17
OTHS Coding Competition 3 (Mock CCC) S1 - The 5th Laboratory	5 / 5
OTHS Coding Competition 3 (Mock CCC) S2 - Together Forever	7 / 7
OTHS Coding Competition 3 (Mock CCC) S3 - Domain Expansion	10 / 10
OTHS Coding Competition 3 (Mock CCC) S4 - Magic Library	15 / 15
OTHS Coding Competition 3 (Mock CCC) S5 - World Tree	9 / 15
SGS Programming Challenge P2 - Vending Machine in Lunch	10 / 10
SGS Programming Challenge P3 - Tree in Biology Class	15 / 15
SGS Programming Challenge P4 - Toy in Psychology Class	17 / 17
UTS Open '21 P4 - Lucky Graph	15 / 15
UTS Open '21 P5 - State Taxes	17 / 17
UTS Open '21 P6 - Terra Mater	25 / 25
UTS Open '21 P7 - April Fools	30 / 30
UTS Open '24 P4 - Political Espionage	12 / 12

Problem	Score
Yet Another Contest 1 P4 - No More Searching	12 / 12
Yet Another Contest 4 P5 - Signpost	10 / 20
Yet Another Contest 5 P3 - Potted Plants	12 / 12
Yet Another Contest 5 P4 - Nils++	8.500 / 17
Yet Another Contest 7 P6 - Arithmetic Sequence Data Structure	25 / 25
Yet Another Contest 9 P1 - Permutation Cutting	5 / 5
Yet Another Contest 9 P2 - Nim	7 / 7
Yet Another Contest 9 P3 - Divide and Delete	10 / 10
Yet Another Contest 9 P4 - Grid Push	15 / 15