User richardzhang_git

Points breakdown

30 / 30

AC | PY3

CCC '10 S4 - Animal Farm

on Feb. 10, 2026, 1:22 a.m.

15pp

weighted 100% (15pp)

15 / 15

AC | PY3

CCC '23 S4 - Minimum Cost Roads

on Feb. 1, 2026, 1:56 a.m.

15pp

weighted 95% (14pp)

25 / 25

AC | PY3

CCO '12 P2 - The Hungary Games

on Jan. 26, 2026, 7:59 p.m.

15pp

weighted 90% (14pp)

100 / 100

AC | PY3

South African Computer Olympiad 2008 Day 1 Problem 3 - Visiting Grandma

on Jan. 25, 2026, 12:31 a.m.

15pp

weighted 86% (13pp)

100 / 100

AC | C++20

GFSSOC '15 Fall S4 - Mostly Talking

on Jan. 20, 2026, 11:37 p.m.

15pp

weighted 81% (12pp)

25 / 25

AC | PY3

CCO '11 P2 - Vampire Tunnels

on Jan. 18, 2026, 10:54 p.m.

15pp

weighted 77% (12pp)

15 / 15

AC | PY3

CCC '15 S4 - Convex Hull

on Jan. 18, 2026, 10:40 p.m.

15pp

weighted 74% (11pp)

15 / 15

AC | PY3

CCC '02 S3 - Blindfold

on Jan. 18, 2026, 4:32 p.m.

15pp

weighted 70% (10pp)

16 / 16

AC | PY3

CCC '19 S3 - Arithmetic Square

on Feb. 4, 2026, 10:07 p.m.

12pp

weighted 66% (8.0pp)

15 / 15

AC | PY3

CCC '06 S3 - Tin Can Telephone

on Jan. 24, 2026, 1:13 a.m.

12pp

weighted 63% (7.6pp)

Problem	Score
CCC '00 J1 - Calendar	5 / 5
CCC '00 J2 - 9966	3 / 3
CCC '00 S1 - Slot Machines	5 / 5
CCC '00 S2 - Babbling Brooks	7 / 7
CCC '00 S3 - Surfing	3.267 / 7
CCC '00 S4 - Golf	7 / 7
CCC '00 S5 - Sheep and Coyotes	6.667 / 10
CCC '01 J1 - Dressing Up	3 / 3
CCC '01 J2 - Mod Inverse	3 / 3
CCC '01 S1 - Keeping Score	5 / 5
CCC '01 S2 - Spirals	5 / 5
CCC '02 J1 - 0123456789	3 / 3
CCC '02 J1 - 0123456789 (Hard)	5 / 5
CCC '02 J2 - AmeriCanadian	3 / 3
CCC '02 S1 - The Students' Council Breakfast	5 / 5
CCC '02 S2 - Fraction Action	5 / 5
CCC '02 S3 - Blindfold	15 / 15
CCC '03 J2 - Picture Perfect	3 / 3
CCC '03 S1 - Snakes and Ladders	5 / 5
CCC '03 S2 - Poetry	5 / 5
CCC '03 S3 - Floor Plan	7 / 7
CCC '03 S4 - Substrings	7 / 15
CCC '03 S5 - Trucking Troubles	7.500 / 10
CCC '04 J1 - Squares	3 / 3
CCC '04 J2 - Terms of Office	3 / 3
CCC '04 J3 - Smile with Similes	3 / 3
CCC '04 J4 - Simple Encryption	5 / 5
CCC '04 J5 - Fractals	10 / 10
CCC '04 S1 - Fix	5 / 5
CCC '04 S2 - TopYodeller	5 / 5
CCC '04 S3 - Spreadsheet	10 / 10
CCC '05 J1 - The Cell Sell	3 / 3
CCC '05 J2 - RSA Numbers	3 / 3
CCC '05 J3 - Returning Home	5 / 5
CCC '05 J4 - Cross Spiral	7 / 7
CCC '05 J5 - Bananas	10 / 10
CCC '05 S1 - Snow Calls	5 / 5
CCC '05 S2 - Mouse Move	5 / 5
CCC '05 S3 - Quantum Operations	10 / 10
CCC '05 S4 - Pyramid Message Scheme	10 / 10
CCC '05 S5 - Pinball Ranking	3.200 / 12
CCC '06 J1 - Canadian Calorie Counting	3 / 3
CCC '06 J2 - Roll the Dice	3 / 3
CCC '06 J3 - Cell-Phone Messaging	3 / 3
CCC '06 J5 - CCC Othello	10 / 10
CCC '06 S1 - Maternity	5 / 5
CCC '06 S2 - Attack of the CipherTexts	5 / 5
CCC '06 S3 - Tin Can Telephone	12 / 12
CCC '07 J1 - Who is in the Middle?	3 / 3
CCC '07 J2 - I Speak TXTMSG	3 / 3
CCC '07 J3 - Deal or No Deal Calculator	3 / 3
CCC '07 J4 - Anagram Checker	5 / 5
CCC '07 J5 - Keep on Truckin'	7 / 7
CCC '07 S1 - Federal Voting Age	3 / 3
CCC '07 S2 - Boxes	5 / 5
CCC '07 S3 - Friends	7 / 7
CCC '07 S4 - Waterpark	7 / 7
CCC '08 J1 - Body Mass Index	3 / 3
CCC '08 J2 - Do the Shuffle	3 / 3
CCC '08 J3 - GPS Text Entry	3 / 3
CCC '08 J4 - From Prefix to Postfix	7 / 7
CCC '08 S1 - It's Cold Here!	5 / 5
CCC '08 S2 - Pennies in the Ring	5 / 5
CCC '08 S3 - Maze	7 / 7
CCC '08 S4 - Twenty-four	10 / 10
CCC '09 J1 - ISBN	3 / 3
CCC '09 J2 - Old Fishin' Hole	5 / 5
CCC '09 J3 - Good Times	5 / 5
CCC '09 J4 - Signage	5 / 5
CCC '09 S1 - Cool Numbers	5 / 5
CCC '09 S2 - Lights Going On and Off	10 / 10
CCC '09 S3 - Degrees Of Separation	10 / 10
CCC '09 S4 - Shop and Ship	5.625 / 10
CCC '10 J1 - What is n, Daddy?	3 / 3
CCC '10 J2 - Up and Down	5 / 5
CCC '10 J3 - Punchy	5 / 5
CCC '10 J4 - Global Warming	5 / 5
CCC '10 J5 - Knight Hop	7 / 7
CCC '10 S1 - Computer Purchase	5 / 5
CCC '10 S2 - Huffman Encoding	5 / 5
CCC '10 S4 - Animal Farm	15 / 15
CCC '11 J1 - Which Alien?	3 / 3
CCC '11 J2 - Who Has Seen The Wind	5 / 5
CCC '11 J3 - Sumac Sequences	5 / 5
CCC '11 J4 - Boring Business	7 / 7
CCC '11 J5 - Unfriend	7 / 7
CCC '11 S1 - English or French?	5 / 5
CCC '11 S2 - Multiple Choice	3 / 3
CCC '11 S3 - Alice Through the Looking Glass	10 / 10
CCC '11 S4 - Blood Distribution	7.500 / 15
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 S1 - Don't pass me the ball!	3 / 3
CCC '12 S2 - Aromatic Numbers	5 / 5
CCC '12 S3 - Absolutely Acidic	7 / 7
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 S3 - Chances of Winning	10 / 10
CCC '13 S4 - Who is Taller?	2.100 / 7
CCC '14 J1 - Triangle Times	3 / 3
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 '15 S4 - Convex Hull	15 / 15
CCC '17 S3 - Nailed It!	7 / 7
CCC '17 S4 - Minimum Cost Flow	11 / 17
CCC '18 S3 - RoboThieves	10 / 10
CCC '18 S4 - Balanced Trees	9 / 15
CCC '19 S2 - Pretty Average Primes	5 / 5
CCC '19 S3 - Arithmetic Square	12 / 12
CCC '21 J4 - Arranging Books	7 / 7
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 '23 S2 - Symmetric Mountains	2.333 / 7
CCC '23 S4 - Minimum Cost Roads	15 / 15
CCC '24 S3 - Swipe	4.667 / 10
CCC '25 S3 - Pretty Pens	3.333 / 10
CCC '25 S4 - Floor is Lava	12 / 12
CCC '26 J3 - Creative Candy Consumption	3 / 3
CCC '26 J4 - Snail Path	5 / 5
CCC '26 S1 - Baby Hop, Giant Hop	3 / 3
CCC '26 S2 - Beams of Light	7 / 7
CCC '26 S3 - Common Card Choice	7 / 7

Problem	Score
CCO '07 P2 - Snowflakes	10 / 10
CCO '11 P2 - Vampire Tunnels	15 / 15
CCO '12 P2 - The Hungary Games	15 / 15
CCO '24 P1 - Treasure Hunt	2 / 10
CCO '98 P5 - Text Segmentation	10 / 10

Problem	Score
DMOPC '13 Contest 3 P5 - A Romantic Dinner	10 / 10
DMOPC '14 Contest 3 P6 - Not Enough Time!	10 / 10
DMOPC '14 Exam Time P4 - Exam Delay	10 / 10
DMOPC '16 Contest 4 P5 - Migrant Mascot	10 / 10
DMOPC '17 Contest 1 P1 - Fujō Neko	5 / 5
DMOPC '17 Contest 1 P3 - Hitchhiking Fun	7 / 7

Problem	Score
MEC '16 P3 - Getting Good at Programming	10 / 10
Miracle Sort	3 / 3
Piggy	7 / 7

Problem	Score
16 BIT S/W ONLY	3 / 3
Arcadia Computing Contest 1 P4 - Cyclic Sorting	7 / 7
List Minimum	3 / 3
List Minimum (Easy)	3 / 3
List Minimum (Hard)	5 / 5
Boolean	3 / 3
Coin Change	7 / 7
Maximum Sum	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 E - Knapsack 2	7 / 7
Exam Prep	1.050 / 7
Knapsack 3	10 / 10
South African Computer Olympiad 2008 Day 1 Problem 3 - Visiting Grandma	15 / 15
Coding Spree	7 / 7

User richardzhang_git

Points breakdown

CCC (766.192 points)

CCO (52 points)

Classics (3 points)

DMOPC (52 points)

GFSSOC (15 points)

ICPC (7 points)

IOI (7 points)

JOI (5 points)

SAC Coding Challenge (7 points)

Seasonal (20 points)

Uncategorized (106.050 points)

VM7WC (17 points)

Woburn Challenge (7 points)

YAC (5 points)

Problem	Score
VM7WC '15 #4 Gold - Chain Rule	10 / 10
VM7WC '16 #5 Silver - Jayden Eats Chocolate	7 / 7