User Yiqing

Points breakdown

100 / 100

AC | Clang++17

Mock CCO '18 Contest 4 Problem 3 - Counterattack

on April 28, 2026, 2:37 p.m.

15pp

weighted 100% (15pp)

25 / 25

AC | JAVA

CCO '12 P2 - The Hungary Games

on April 28, 2026, 2:04 p.m.

15pp

weighted 95% (14pp)

200 / 200

AC | Clang++17

Bulgarian OI '09 P2 - Boxen

on May 12, 2026, 1:38 p.m.

12pp

weighted 90% (11pp)

100 / 100

AC | JAVA

Longest Up-Down Subsequence

on April 28, 2026, 4:29 p.m.

12pp

weighted 86% (10pp)

100 / 100

AC | Clang++17

COCI '09 Contest 7 #4 Svemir

on April 27, 2026, 6:19 p.m.

12pp

weighted 81% (9.8pp)

70 / 100

WA | Clang++17

Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem

on May 9, 2026, 6:34 p.m.

11pp

weighted 77% (8.1pp)

16 / 16

AC | JAVA

CCC '03 S5 - Trucking Troubles

on April 28, 2026, 3:06 a.m.

10pp

weighted 74% (7.4pp)

100 / 100

AC | Clang++17

HCI '16 - Taxi

on April 27, 2026, 6:06 p.m.

10pp

weighted 70% (7.0pp)

100 / 100

AC | JAVA

Another Contest 7 Problem 3 - Network Connections

on April 27, 2026, 12:52 a.m.

10pp

weighted 66% (6.6pp)

100 / 100

AC | JAVA

ICPC NAQ 2016 C - Big Truck

on April 26, 2026, 8:24 p.m.

10pp

weighted 63% (6.3pp)

Problem	Score
BlueBook - Pay	3 / 3
BlueBook - Min	3 / 3
BlueBook - Digits	3 / 3

Problem	Score
CCC '00 S2 - Babbling Brooks	7 / 7
CCC '01 S2 - Spirals	5 / 5
CCC '01 S2 - Spirals (Exact Version)	7 / 7
CCC '02 J2 - AmeriCanadian	3 / 3
CCC '02 S2 - Fraction Action	5 / 5
CCC '03 S2 - Poetry	5 / 5
CCC '03 S5 - Trucking Troubles	10 / 10
CCC '04 S2 - TopYodeller	5 / 5
CCC '05 S2 - Mouse Move	5 / 5
CCC '06 S2 - Attack of the CipherTexts	5 / 5
CCC '07 J3 - Deal or No Deal Calculator	3 / 3
CCC '07 S2 - Boxes	5 / 5
CCC '08 J1 - Body Mass Index	3 / 3
CCC '08 S2 - Pennies in the Ring	5 / 5
CCC '09 S2 - Lights Going On and Off	10 / 10
CCC '10 S2 - Huffman Encoding	5 / 5
CCC '11 S2 - Multiple Choice	3 / 3
CCC '12 J4 - Big Bang Secrets	3 / 3
CCC '12 S2 - Aromatic Numbers	5 / 5
CCC '13 J4 - Time on task	5 / 5
CCC '13 S2 - Bridge Transport	5 / 5
CCC '14 J3 - Double Dice	3 / 3
CCC '14 S2 - Assigning Partners	5 / 5
CCC '15 J3 - Rövarspråket	5 / 5
CCC '15 J4 - Wait Time	5 / 5
CCC '15 S2 - Jerseys	5 / 5
CCC '16 J3 - Hidden Palindrome	5 / 5
CCC '16 J4 - Arrival Time	5 / 5
CCC '16 S2 - Tandem Bicycle	5 / 5
CCC '17 J3 - Exactly Electrical	3 / 3
CCC '17 J4 - Favourite Times	5 / 5
CCC '17 S2 - High Tide, Low Tide	5 / 5
CCC '18 J3 - Are we there yet?	3 / 3
CCC '18 S2 - Sunflowers	5 / 5
CCC '19 J3 - Cold Compress	5 / 5
CCC '19 S2 - Pretty Average Primes	5 / 5
CCC '20 J3 - Art	3 / 3
CCC '20 J4 - Cyclic Shifts	5 / 5
CCC '21 J3 - Secret Instructions	5 / 5
CCC '21 J4 - Arranging Books	7 / 7
CCC '21 S2 - Modern Art	7 / 7
CCC '22 J3 - Harp Tuning	5 / 5
CCC '22 S2 - Good Groups	5 / 5
CCC '23 J2 - Chili Peppers	3 / 3
CCC '23 J3 - Special Event	5 / 5
CCC '23 J5 - CCC Word Hunt	10 / 10
CCC '23 S4 - Minimum Cost Roads	3 / 15
CCC '24 J1 - Conveyor Belt Sushi	3 / 3
CCC '24 J2 - Dusa And The Yobis	3 / 3
CCC '24 J3 - Bronze Count	5 / 5
CCC '24 J4 - Troublesome Keys	7 / 7
CCC '24 J5 - Harvest Waterloo	7 / 7
CCC '25 J1 - Roller Coaster Ride	3 / 3
CCC '25 J2 - Donut Shop	3 / 3
CCC '25 J3 - Product Codes	5 / 5
CCC '25 J4 - Sunny Days	5 / 5
CCC '25 J5 - Connecting Territories	7 / 7
CCC '25 S4 - Floor is Lava	3.200 / 12
CCC '26 J3 - Creative Candy Consumption	3 / 3
CCC '26 J4 - Snail Path	5 / 5
CCC '26 S2 - Beams of Light	1.400 / 7
CCC '96 S4 - When in Rome	10 / 10
CCC '97 S2 - Nasty Numbers	5 / 5
CCC '98 S2 - Cross Number Puzzle	5 / 5
CCCHK '08 J4 - Tic-tac-toe	5 / 5
CCCHK '15 J4 - Where to build my house?	1.333 / 5
CCCHK '15 S2 - Matching Problem	3.750 / 10

Problem	Score
CCO '12 P2 - The Hungary Games	15 / 15
CCO '14 P1 - Troyangles	4 / 10

Problem	Score
NOI '11 P4 - Road Construction	0.350 / 7
NOIP '18 Junior P1 - Title Statistics	3 / 3

Problem	Score
Sorting	3 / 3
Next Prime	5 / 5
Single Source Shortest Path	7 / 7

User Yiqing

Points breakdown

AAC (3 points)

ACC (10 points)

BlueBook (9 points)

Bulgarian OI (12 points)

CCC (326.683 points)

CCO (19 points)

China NOI (3.350 points)

Classics (15 points)

COCI (15 points)

Data Structure Tests (10 points)

DMOPC (45.700 points)

Google Code Jam (6 points)

ICPC (13 points)

Mock CCC (1.333 points)

Mock CCO (28 points)

POI (12 points)

Seasonal (3 points)

Uncategorized (145.500 points)

VM7WC (18 points)

WAC (3 points)

Woburn Challenge (8 points)

Problem	Score
COCI '09 Contest 7 #4 Svemir	12 / 12
COCI '10 Contest 3 #2 Zbroj	3 / 3

Problem	Score
DMOPC '14 Contest 1 P2 - Tiles	3 / 3
DMOPC '14 Contest 1 P3 - New Students	3 / 3
DMOPC '14 Contest 2 P3 - Sawmill	7 / 7
DMOPC '15 Contest 2 P3 - Origami	7 / 7
DMOPC '16 Contest 4 P1 - Fast Exponents	5 / 5
DMOPC '16 Contest 4 P2 - Systests	7 / 7
DMOPC '19 Contest 1 P0 - Range Finding	3 / 3
DMOPC '19 Contest 2 P0 - Roller Coaster	3 / 3
DMOPC '21 Contest 4 P2 - Festive Groups	7 / 7
DMPG '17 B6 - Multiply and Surrender	0.700 / 7

Problem	Score
Google Code Jam '15 Qualification Round Problem A - Standing Ovation	3 / 3
Google Code Jam '21 Qualification Round Problem A - Reversort	3 / 3

Problem	Score
ACM U of T Tryouts C0 A - Max Flow	3 / 3
ICPC NAQ 2016 C - Big Truck	10 / 10

Problem	Score
CCO Preparation Test 4 P3 - Dynamic MST	2.500 / 25
Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem	10.500 / 15
Mock CCO '18 Contest 4 Problem 3 - Counterattack	15 / 15

Problem	Score
Mirrored Pairs	3 / 3
AAAA 1 P1 - Even-Odd Sort	7 / 7
Sum of Primes 2	1 / 5
Amplitude Hackathon Winter '25 Problem 2 - Zach?	3 / 3
Another Sorting	5 / 5
A Plus B	3 / 3
Avocado Trees!	5 / 5
Adding Reversed Numbers	5 / 5
List Minimum	3 / 3
List Minimum (Hard)	5 / 5
Lexicographically Least Substring	5 / 5
Chocolate Bar	5 / 5
Chores	7 / 7
Rock Climbing	5 / 5
German Nouns	5 / 5
Emoji Search	5 / 5
Graph Contest 1 P2 - Shortest Path	5 / 5
HCI '16 - Lamppost	5 / 5
HCI '16 - Taxi	10 / 10
Hello, World!	3 / 3
Inaho V	3 / 3
Mock DWITE '09 P1 - Super Special Awesome Numbers =D	5 / 5
Modulo Sort	5 / 5
Path Finder	1.500 / 10
The Mirror	5 / 5
Pie	3 / 3
Factorial Sum List	5 / 5
VMSS Pre-Windsor P1 - Java	3 / 3
Sandwich	5 / 5
Trick-or-Treat	5 / 5
Valentine's Day '19 J1 - Rainbow Rating	3 / 3
Willie's Fan Club	7 / 7

Problem	Score
VM7WC '15 #2 Bronze - Recruits!	3 / 3
VM7WC '15 #4 Gold - Chain Rule	10 / 10
VM7WC '16 #3 Silver - Can Shahir even get there?!	5 / 5

Problem	Score
WC '15 Contest 2 J1 - A New Hope	3 / 3
WC '96 P6 - Bases Multiplication	5 / 5