User AndyZhang68

Points breakdown

15 / 15

AC | C++20

CCC '19 S5 - Triangle: The Data Structure

91 days ago

20pp

weighted 100% (20pp)

25 / 25

AC | PYPY3

CCO '22 P2 - Rainy Markets

60 days ago

17pp

weighted 95% (16pp)

100 / 100

AC | C++20

2-Dimensional Range Minimum Query

75 days ago

17pp

weighted 90% (15pp)

100 / 100

AC | C++20

IOI '11 P2 - Race

on Dec. 31, 2024, 8:36 p.m.

17pp

weighted 86% (15pp)

100 / 100

AC | C++20

IOI '11 P2 - Race (Standard I/O)

on Dec. 31, 2024, 8:22 p.m.

17pp

weighted 81% (14pp)

15 / 15

AC | PY3

CCC '22 S5 - Good Influencers

on Oct. 6, 2024, 2:45 a.m.

17pp

weighted 77% (13pp)

100 / 100

AC | PY3

COCI '08 Contest 4 #4 Slikar

on Aug. 19, 2024, 6:08 a.m.

17pp

weighted 74% (12pp)

350 / 350

AC | C++20

Boxlings

37 hours ago

15pp

weighted 70% (10pp)

100 / 100

AC | PYPY3

DMOPC '16 Contest 1 P4 - Tree Appraisal

35 days ago

15pp

weighted 66% (10.0pp)

30 / 30

AC | PY3

CCC '10 S4 - Animal Farm

61 days ago

15pp

weighted 63% (9.5pp)

Problem	Category	Points
Rainy Days	Uncategorized	5p
A Segment Tree Game	Uncategorized	10

Problem	Score
An Animal Contest 1 P1 - Alpaca Shapes	3 / 3
An Animal Contest 1 P2 - Alpaca Racing	5 / 5
An Animal Contest 1 P3 - Happy Alpacas	7 / 7
An Animal Contest 1 P4 - Alpaca Arrays	1 / 10
An Animal Contest 1 P5 - Odd Alpacas	12 / 12
An Animal Contest 2 P0 - Koala Matchmaking	3 / 3
An Animal Contest 2 P3 - Koala Balloons	12 / 12
An Animal Contest 5 P1 - Bamboo Cookies	3 / 3
An Animal Contest 5 P2 - Permutations & Products	5 / 5

Problem	Score
BlueBook - Cross Country	3 / 3
BlueBook - Find the Character	3 / 3
BlueBook - Digits and Sums	3 / 3
BlueBook - Max	3 / 3
BlueBook - Mode	3 / 3
BlueBook - Magic Square	3 / 3

Problem	Score
CCC '00 S2 - Babbling Brooks	7 / 7
CCC '01 J1 - Dressing Up	3 / 3
CCC '01 J2 - Mod Inverse	3 / 3
CCC '02 J2 - AmeriCanadian	3 / 3
CCC '02 S2 - Fraction Action	5 / 5
CCC '03 S3 - Floor Plan	7 / 7
CCC '04 S1 - Fix	5 / 5
CCC '05 J5 - Bananas	10 / 10
CCC '05 S1 - Snow Calls	5 / 5
CCC '07 J1 - Who is in the Middle?	3 / 3
CCC '07 J3 - Deal or No Deal Calculator	3 / 3
CCC '07 J4 - Anagram Checker	5 / 5
CCC '07 S2 - Boxes	5 / 5
CCC '07 S4 - Waterpark	7 / 7
CCC '07 S5 - Bowling for Numbers	10 / 10
CCC '08 J2 - Do the Shuffle	3 / 3
CCC '09 S3 - Degrees Of Separation	10 / 10
CCC '10 J1 - What is n, Daddy?	3 / 3
CCC '10 J5 - Knight Hop	7 / 7
CCC '10 S3 - Firehose	15 / 15
CCC '10 S4 - Animal Farm	15 / 15
CCC '11 J1 - Which Alien?	3 / 3
CCC '11 J3 - Sumac Sequences	5 / 5
CCC '11 J5 - Unfriend	7 / 7
CCC '11 S2 - Multiple Choice	3 / 3
CCC '12 J1 - Speed fines are not fine!	3 / 3
CCC '12 J2 - Sounds fishy!	3 / 3
CCC '12 J3 - Icon Scaling	3 / 3
CCC '12 J4 - Big Bang Secrets	3 / 3
CCC '12 S2 - Aromatic Numbers	5 / 5
CCC '12 S4 - A Coin Game	12 / 15
CCC '12 S5 - Mouse Journey	7 / 7
CCC '13 J1 - Next in line	3 / 3
CCC '13 J2 - Rotating letters	3 / 3
CCC '13 J4 - Time on task	5 / 5
CCC '13 S1 - From 1987 to 2013	5 / 5
CCC '13 S2 - Bridge Transport	5 / 5
CCC '13 S5 - Factor Solitaire	15 / 15
CCC '14 J2 - Vote Count	3 / 3
CCC '14 J3 - Double Dice	3 / 3
CCC '14 S1 - Party Invitation	5 / 5
CCC '14 S2 - Assigning Partners	5 / 5
CCC '14 S3 - The Geneva Confection	7 / 7
CCC '14 S4 - Tinted Glass Window	15 / 15
CCC '15 J1 - Special Day	3 / 3
CCC '15 J2 - Happy or Sad	3 / 3
CCC '15 J3 - Rövarspråket	5 / 5
CCC '15 J5 - π-day	10 / 10
CCC '15 S3 - Gates	10 / 10
CCC '15 S4 - Convex Hull	15 / 15
CCC '16 J1 - Tournament Selection	3 / 3
CCC '16 J2 - Magic Squares	3 / 3
CCC '16 J3 - Hidden Palindrome	5 / 5
CCC '16 S1 - Ragaman	3 / 3
CCC '16 S3 - Phonomenal Reviews	12 / 12
CCC '16 S4 - Combining Riceballs	15 / 15
CCC '17 J1 - Quadrant Selection	3 / 3
CCC '17 J2 - Shifty Sum	3 / 3
CCC '17 J3 - Exactly Electrical	3 / 3
CCC '17 S1 - Sum Game	3 / 3
CCC '18 J1 - Telemarketer or not?	3 / 3
CCC '18 J2 - Occupy parking	3 / 3
CCC '18 J3 - Are we there yet?	3 / 3
CCC '18 J5 - Choose your own path	7 / 7
CCC '19 J1 - Winning Score	3 / 3
CCC '19 J2 - Time to Decompress	3 / 3
CCC '19 J3 - Cold Compress	5 / 5
CCC '19 S1 - Flipper	3 / 3
CCC '19 S2 - Pretty Average Primes	5 / 5
CCC '19 S5 - Triangle: The Data Structure	20 / 20
CCC '20 J1 - Dog Treats	3 / 3
CCC '20 J2 - Epidemiology	3 / 3
CCC '20 J3 - Art	3 / 3
CCC '20 J4 - Cyclic Shifts	5 / 5
CCC '20 S1 - Surmising a Sprinter's Speed	5 / 5
CCC '20 S2 - Escape Room	10 / 10
CCC '20 S3 - Searching for Strings	4.200 / 12
CCC '21 J1 - Boiling Water	3 / 3
CCC '21 J2 - Silent Auction	3 / 3
CCC '21 J3 - Secret Instructions	5 / 5
CCC '21 S1 - Crazy Fencing	5 / 5
CCC '21 S2 - Modern Art	7 / 7
CCC '21 S4 - Daily Commute	12 / 12
CCC '22 J1 - Cupcake Party	3 / 3
CCC '22 J2 - Fergusonball Ratings	3 / 3
CCC '22 J3 - Harp Tuning	5 / 5
CCC '22 J5 - Square Pool	10 / 10
CCC '22 S1 - Good Fours and Good Fives	5 / 5
CCC '22 S2 - Good Groups	5 / 5
CCC '22 S3 - Good Samples	10 / 10
CCC '22 S4 - Good Triplets	15 / 15
CCC '22 S5 - Good Influencers	17 / 17
CCC '23 J1 - Deliv-e-droid	3 / 3
CCC '23 J2 - Chili Peppers	3 / 3
CCC '23 J3 - Special Event	5 / 5
CCC '23 J5 - CCC Word Hunt	10 / 10
CCC '23 S1 - Trianglane	5 / 5
CCC '23 S2 - Symmetric Mountains	7 / 7
CCC '23 S3 - Palindromic Poster	10 / 10
CCC '23 S4 - Minimum Cost Roads	15 / 15
CCC '24 J1 - Conveyor Belt Sushi	3 / 3
CCC '24 J3 - Bronze Count	5 / 5
CCC '24 J4 - Troublesome Keys	5 / 5
CCC '24 J5 - Harvest Waterloo	7 / 7
CCC '24 S1 - Hat Circle	3 / 3
CCC '24 S2 - Heavy-Light Composition	5 / 5
CCC '25 J4 - Sunny Days	5 / 5
CCC '25 S1 - Positioning Peter's Paintings	3 / 3
CCC '25 S2 - Cryptogram Cracking Club	7 / 7
CCC '25 S4 - Floor is Lava	1.600 / 12
CCC '96 S3 - Pattern Generator	5 / 5
CCOQR '16 - Stupendous Bowties	10 / 10
CCOQR '16 - Data Structure	15 / 15
CCCHK '08 J1 - Best fish	3 / 3
CCCHK '08 J2 - Lucky Number	3 / 3
CCCHK '08 J3 - Phone book	5 / 5
CCCHK '15 J3 - Queens can't attack me!	5 / 5

Problem	Score
CCO '00 P4 - Packet Routing	7 / 7
CCO '01 P1 - The Monkey Dance	10 / 10
CCO '05 P5 - Segments	10 / 10
CCO '07 P2 - Snowflakes	10 / 10
CCO '11 P2 - Vampire Tunnels	15 / 15
CCO '13 P3 - LHC	12 / 12
CCO '15 P1 - Hungry Fox	15 / 15
CCO '16 P4 - O Canada	10 / 10
CCO '18 P4 - Gradient Descent	15 / 15
CCO '22 P2 - Rainy Markets	17 / 17
CCO '97 P2 - Alien Invasion	10 / 10

User AndyZhang68

Points breakdown

Authored problems (2)

AAC (51 points)

BlueBook (18 points)

CCC (705.800 points)

CCO (131 points)

CEOI (15 points)

Classics (55 points)

COCI (56 points)

Data Structure Tests (10 points)

DMOPC (189.700 points)

DWITE (30 points)

ECOO (10 points)

EGOI (19 points)

Google Code Jam (12 points)

IOI (111.600 points)

Mock CCC (53.400 points)

MWC (7 points)

SAC Coding Challenge (28 points)

Seasonal (57 points)

TLE (20 points)

Uncategorized (547.900 points)

VM7WC (24 points)

WAC (10 points)

Woburn Challenge (37 points)

Problem	Score
2-Dimensional Range Minimum Query	17 / 17
Sorting	3 / 3
Next Prime	5 / 5
Longest Increasing Subsequence	10 / 10
Quine	10 / 10
Unique Elements	3 / 3
Single Source Shortest Path	7 / 7

Problem	Score
COCI '07 Contest 4 #2 Veci	5 / 5
COCI '08 Contest 2 #3 Perket	7 / 7
COCI '08 Contest 4 #4 Slikar	17 / 17
COCI '13 Contest 5 #3 Eksplozjia	10 / 10
COCI '14 Contest 2 #1 Mobitel	5 / 5
COCI '14 Contest 4 #1 Cesta	5 / 5
COCI '17 Contest 1 #3 Lozinke Hard	7 / 7

Problem	Score
DMOPC '13 Contest 1 P4 - AFK	7 / 7
DMOPC '13 Contest 3 P1 - Sharing is Caring	5 / 5
DMOPC '14 Contest 1 P2 - Tiles	3 / 3
DMOPC '14 Contest 1 P3 - New Students	3 / 3
DMOPC '14 Contest 2 P4 - Deforestation	5 / 5
DMOPC '14 Contest 2 P5 - Sawmill Scheme	10 / 10
DMOPC '15 Contest 6 P3 - Harvest	7 / 7
DMOPC '15 Contest 6 P4 - Line Graph	10 / 10
DMOPC '15 Contest 7 P2 - Not a Wall of Text	3 / 3
DMOPC '16 Contest 1 P4 - Tree Appraisal	15 / 15
DMOPC '16 Contest 4 P1 - Fast Exponents	5 / 5
DMOPC '16 Contest 4 P2 - Systests	7 / 7
DMOPC '17 Contest 1 P1 - Fujō Neko	5 / 5
DMOPC '17 Contest 4 P1 - Ribbon Colouring Fun	5 / 5
DMOPC '17 Contest 5 P1 - IOI 101	3 / 3
DMOPC '17 Contest 5 P3 - Mimi and Primes	0.700 / 7
DMOPC '18 Contest 1 P1 - Sorting	5 / 5
DMOPC '18 Contest 2 P3 - Thanksgiving Feast	10 / 10
DMOPC '18 Contest 5 P3 - A Familiar Problem	7 / 7
DMOPC '19 Contest 5 P1 - Conspicuous Cryptic Checklist	5 / 5
DMOPC '20 Contest 4 P1 - Missing Numbers	5 / 5
DMOPC '20 Contest 5 P1 - Home Row	3 / 3
DMOPC '20 Contest 7 P1 - Bob and Balance	7 / 7
DMOPC '21 Contest 3 P2 - Weak Data	5 / 10
DMOPC '21 Contest 7 P1 - Chika Grids	5 / 5
DMOPC '22 Contest 5 P2 - Absolutely Even	7 / 7
DMPG '16 B1 - BFS	3 / 3
DMPG '16 S5 - Pizza Bag	12 / 12
DMPG '18 G1 - Musical Chairs	10 / 10
DMPG '18 S4 - Mimi and Prize	12 / 12

Problem	Score
DWITE '07 R1 #4 - Stacks of Blocks	5 / 5
DWITE '07 R2 #4 - All Is Balanced	5 / 5
DWITE '08 R3 #2 - Wordcount++	5 / 5
DWITE '10 R3 #3 - Dominos Tiling	10 / 10
DWITE '10 R5 #2 - Safe from Rooks	5 / 5

Problem	Score
ECOO '19 R2 P1 - Email	5 / 5
ECOO '20 P2 - Online Shopping	5 / 5

Problem	Score
EGOI '21 P2 - Luna Likes Love	12 / 12
EGOI '23 P1 - Inflation	7 / 7

Problem	Score
IOI '02 P2 - Utopia Divided	5.600 / 20
IOI '09 Practice Task 3 - Museum	15 / 15
IOI '11 P2 - Race	17 / 17
IOI '11 P2 - Race (Standard I/O)	17 / 17
IOI '13 P1 - Dreaming	15 / 15
IOI '13 P1 - Dreaming (Standard I/O)	15 / 15
IOI '14 Practice Task 1 - Square	10 / 10
IOI '94 P1 - The Triangle	7 / 7
IOI '96 P1 - A Game	10 / 10

Problem	Score
Mock CCC '22 Contest 1 J1 - Square Root Decomposition	3 / 3
Mock CCC '22 Contest 1 J3 - String Crossing Maximization	7 / 7
Mock CCC '23 Contest 1 J1 - Final Velocity	3 / 3
Mock CCC '23 Contest 1 J2 - Healthy Schedule	3 / 3
Mock CCC '18 Contest 1 J2 - A Substring Problem	3 / 3
Mock CCC '18 Contest 1 J4/S2 - A Square Problem	5 / 5
Mock CCC '18 Contest 2 J3/S1 - An Array Problem	1.400 / 7
Mock CCC '18 Contest 2 J5/S3 - A Coloring Problem	8 / 10
Mock CCC '18 Contest 3 J1 - A Sum Problem	3 / 3
Mock CCC '18 Contest 3 J2 - A Palindrome Problem	3 / 3
Mock CCC '18 Contest 3 J3/S1 - A String Problem	5 / 5
Mock CCC '18 Contest 5 J1 - Looking for the CCC	3 / 3
Mock CCC '19 Contest 1 J2 - Pusheen OCR	3 / 3
Mock CCC '19 Contest 1 J4 - Pusheen Plays Neko Atsume	3 / 3

Problem	Score
SAC '22 Code Challenge 3 Junior P1 - Normal Problem	3 / 3
SAC '22 Code Challenge 3 Junior P3 - Normal Probabilities	3 / 3
SAC '22 Code Challenge 3 P1 - Hair Hazards	3 / 3
SAC '22 Code Challenge 3 P3 - Bob Sort	5 / 5
SAC '22 Code Challenge 4 Junior P1 - Obligatory DeMello Problem	3 / 3
SAC '22 Code Challenge 4 Junior P2 - Obligatory Geometry Problem	3 / 3
SAC '22 Code Challenge 4 P1 - Obligatory Car Problem	3 / 3
SAC '22 Code Challenge 4 P3 - Obligatory Math Problem	5 / 5

Problem	Score
Back From Summer '17 P2: Crayola Lightsaber	7 / 7
Back To School '16: Cherry Tree	12 / 12
Back To School '18: Letter Frequency	7 / 7
Back To School '18: Beautiful Trees	10 / 10
Miracle Sort	3 / 3
Too Simple	7 / 7
Is it a Tree?	7 / 7
WOSS Dual Olympiad 2021 S3: Late for Class!	1 / 10
New Year's '15 P1 - Invitation Devastation	3 / 3

Problem	Score
TLE '15 P5 - Prefix Sum Array	15 / 15
TLE '16 Contest 6 (Mock CCC) S1 - Writing the CCC	5 / 5

Problem	Score
16 BIT S/W ONLY	3 / 3
2-D Permutations	10 / 10
2spooky4me	7 / 7
Mispelling	3 / 3
Mirrored Pairs	3 / 3
Triple Fat Ladies	5 / 5
Appleby Contest '20 P3 - Ridiculous String	4 / 10
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!	4 / 5
A Noisy Class	7 / 7
A Plus B	3 / 3
Palindromic Integer Partition	5 / 5
List Minimum	3 / 3
List Minimum (Easy)	3 / 3
List Minimum (Hard)	5 / 5
String Finding	5 / 5
Bob's Rocks	5 / 5
Boolean	3 / 3
Boxlings	15 / 15
Brap Lesh Mafia	5 / 5
Checkerboard Summation (Easy)	12 / 12
Checkerboard Summation (Hard)	15 / 15
Cheerio Contest 3 P1 - Wet Floor	5 / 5
Cheerio Contest 3 P2 - Double-O-Seven	5 / 5
Dr. Anne Anderson Coding Contest 1 P1 - Due Dates	3 / 3
Dr. Anne Anderson Coding Contest 1 P2 - Pokemon Battles	3 / 3
Dr. Anne Anderson Coding Contest 1 P3 - The Unwritten Rules	5 / 5
Dr. Anne Anderson Coding Contest 1 P4 - Lighting	5 / 5
Dr. Anne Anderson Coding Contest 1 P5 - Guessing Grades	0.400 / 7
Dr. Anne Anderson Coding Contest 1 P6 - Designing An Academic Course Calendar	10 / 10
Dilhan's Computing Contest 1 P1 - The Cathedral of Learning	5 / 5
Dilhan's Computing Contest 1 P2 - Square Sum	12 / 12
Age Demographic	5 / 5
Maximum Sum	7 / 7
Longest Increasing Subsequence	7 / 7
Educational DP Contest AtCoder A - Frog 1	7 / 7
Educational DP Contest AtCoder B - Frog 2	7 / 7
Educational DP Contest AtCoder C - Vacation	7 / 7
Educational DP Contest AtCoder D - Knapsack 1	7 / 7
Educational DP Contest AtCoder G - Longest Path	10 / 10
Educational DP Contest AtCoder H - Grid 1	7 / 7
Educational DP Contest AtCoder I - Coins	10 / 10
Educational DP Contest AtCoder N - Slimes	12 / 12
Educational DP Contest AtCoder P - Independent Set	12 / 12
Fibonacci Sequence	1.500 / 15
PEG Test '11 - Cyclopian Puzzle	10 / 10
GlobeX Cup '18 J5 - Errands	10 / 10
Breaking the Friend Chain	7 / 7
Hello, World!	3 / 3
Icebergs	12 / 12
Word Scrambler	5 / 5
Largest Permutation	7 / 7
Lil' Jami	5 / 5
Guess the Sequence	3 / 3
A Math Contest P2 - Subsequence Sum	5 / 5
A Math Contest P5 - Good Arrays	7 / 7
MCIPC Contest 2 P1 - Super Mega Snowball	3 / 3
Multiplication Madness	7 / 7
The Odd Number	7 / 7
OTHS Coding Competition 1 (Mock CCC) J1 - Math Assistance	3 / 3
OTHS Coding Competition 1 (Mock CCC) J2 - Wand Selection	3 / 3
OTHS Coding Competition 1 (Mock CCC) J3 - Explosion	5 / 5
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun	7 / 7
Path Finder	10 / 10
Prime Factorization	5 / 5
Primes	3 / 3
VMSS Pre-Windsor P1 - Java	3 / 3
Disclosure	10 / 10
Rainy Days	5 / 5
The Cosmic Era P2 - Uneven Sand	5 / 5
The Cosmic Era P3 - Battle Positions	7 / 7
A Segment Tree Game	10 / 10
Python Infinite Loop	7 / 7
Segment Tree Practice 1	12 / 12
Segment Tree Practice 2	12 / 12
Cute String Merging	15 / 15
T-800's Escape	10 / 10
Threes	3 / 3
TSS Club Fair 2017 Problem B	7 / 7
UACC 1 P1 - Bench Press Bob	3 / 3
UACC 1 P2 - Puzzling Parks	5 / 5
UCC Coding Competition '20 P4 - Bubble Tea	7 / 7
UHCC1 P2 - String	5 / 5
Intertwined Strings	7 / 7
UTS Open '24 P2 - Happy Gifts	7 / 7
VPEX P0 - Pizza	3 / 3

Problem	Score
VM7WC '16 #3 Silver - Can Shahir even get there?!	5 / 5
VM7WC '16 #4 Silver - Tests or Test Cases?	5 / 5
VM7WC '16 #5 Gold - Jayden Studies Trees	7 / 7
VM7WC '16 #5 Silver - Jayden Eats Chocolate	7 / 7

Problem	Score
WC '17 Contest 1 J1 - Canadian Accent	3 / 3
WC '18 Contest 1 S2 - Essay Generator	7 / 7
WC '18 Contest 2 S2 - Plutonium	12 / 12
WC '99 Suicidal P4 - Good Ethan Hunt	15 / 15