User jianfeng

Points breakdown

15 / 15

AC | PY3

CCC '05 J5 - Bananas

on March 9, 2026, 2:46 a.m.

10pp

weighted 100% (10pp)

100 / 100

AC | PY3

GFSSOC '15 Fall J5 - Nightmare-a-thon

on Feb. 7, 2026, 8:50 p.m.

10pp

weighted 95% (9.5pp)

10 / 10

AC | PY3

COCI '16 Contest 2 #3 Nizin

on Nov. 19, 2025, 10:12 p.m.

10pp

weighted 90% (9.0pp)

100 / 100

AC | PYPY3

BSSPC '21 J5 - James and the Euclid Test

on April 28, 2026, 1:10 a.m.

7pp

weighted 86% (6.0pp)

8 / 8

AC | PY3

COCI '07 Contest 2 #3 Prva

on April 25, 2026, 4:46 p.m.

7pp

weighted 81% (5.7pp)

100 / 100

AC | PY3

MWC '15 #1 P5: Love Guru

on April 20, 2026, 9:31 p.m.

7pp

weighted 77% (5.4pp)

100 / 100

AC | PY3

DMOPC '21 Contest 4 P2 - Festive Groups

on April 18, 2026, 5:26 p.m.

7pp

weighted 74% (5.1pp)

100 / 100

AC | PY3

DMOPC '21 Contest 5 P2 - Permutations & Primes

on April 18, 2026, 4:47 p.m.

7pp

weighted 70% (4.9pp)

50 / 50

AC | PY3

MMM '14 A - Distinct Prime Factors

on April 18, 2026, 4:27 p.m.

7pp

weighted 66% (4.6pp)

15 / 15

AC | PY3

CCC '25 S2 - Cryptogram Cracking Club

on April 14, 2026, 12:45 a.m.

7pp

weighted 63% (4.4pp)

Problem	Score
CCC '00 S2 - Babbling Brooks	7 / 7
CCC '01 J2 - Mod Inverse	3 / 3
CCC '02 J2 - AmeriCanadian	3 / 3
CCC '03 S2 - Poetry	5 / 5
CCC '04 S1 - Fix	5 / 5
CCC '05 J1 - The Cell Sell	3 / 3
CCC '05 J2 - RSA Numbers	3 / 3
CCC '05 J3 - Returning Home	5 / 5
CCC '05 J5 - Bananas	10 / 10
CCC '05 S1 - Snow Calls	5 / 5
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 '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 '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 '09 J2 - Old Fishin' Hole	5 / 5
CCC '09 J3 - Good Times	5 / 5
CCC '09 J4 - Signage	5 / 5
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 S1 - Computer Purchase	5 / 5
CCC '10 S2 - Huffman Encoding	5 / 5
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 '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 '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 '14 S2 - Assigning Partners	5 / 5
CCC '14 S3 - The Geneva Confection	7 / 7
CCC '15 J1 - Special Day	3 / 3
CCC '15 J2 - Happy or Sad	3 / 3
CCC '15 J3 - Rövarspråket	5 / 5
CCC '15 J4 - Wait Time	5 / 5
CCC '16 J1 - Tournament Selection	3 / 3
CCC '16 J2 - Magic Squares	3 / 3
CCC '16 J3 - Hidden Palindrome	5 / 5
CCC '16 J4 - Arrival Time	5 / 5
CCC '16 S1 - Ragaman	3 / 3
CCC '17 J1 - Quadrant Selection	3 / 3
CCC '17 J2 - Shifty Sum	3 / 3
CCC '17 J3 - Exactly Electrical	3 / 3
CCC '17 J4 - Favourite Times	5 / 5
CCC '17 S1 - Sum Game	3 / 3
CCC '17 S2 - High Tide, Low Tide	5 / 5
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 S1 - Voronoi Villages	3 / 3
CCC '18 S2 - Sunflowers	5 / 5
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 '20 J3 - Art	3 / 3
CCC '20 J4 - Cyclic Shifts	5 / 5
CCC '20 S1 - Surmising a Sprinter's Speed	5 / 5
CCC '21 J3 - Secret Instructions	5 / 5
CCC '21 J4 - Arranging Books	7 / 7
CCC '21 S1 - Crazy Fencing	5 / 5
CCC '21 S2 - Modern Art	7 / 7
CCC '22 J3 - Harp Tuning	5 / 5
CCC '22 S1 - Good Fours and Good Fives	5 / 5
CCC '22 S2 - Good Groups	5 / 5
CCC '23 J3 - Special Event	5 / 5
CCC '23 S1 - Trianglane	5 / 5
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 '24 S1 - Hat Circle	3 / 3
CCC '24 S2 - Heavy-Light Composition	5 / 5
CCC '25 J3 - Product Codes	5 / 5
CCC '25 J4 - Sunny Days	5 / 5
CCC '25 J5 - Connecting Territories	7 / 7
CCC '25 S1 - Positioning Peter's Paintings	3 / 3
CCC '25 S2 - Cryptogram Cracking Club	7 / 7
CCC '26 J1 - Concert Tickets	3 / 3
CCC '26 J2 - Olympic Scores	3 / 3
CCC '26 J3 - Creative Candy Consumption	3 / 3
CCC '26 J4 - Snail Path	5 / 5
CCC '26 S1 - Baby Hop, Giant Hop	5 / 5
CCC '26 S2 - Beams of Light	7 / 7
CCC '26 S3 - Common Card Choice	7 / 7
CCC '96 S3 - Pattern Generator	5 / 5
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
Next Prime	5 / 5
Unique Elements	3 / 3

Problem	Score
COCI '06 Contest 6 #3 Maraton	5 / 5
COCI '07 Contest 2 #3 Prva	7 / 7
COCI '08 Contest 2 #3 Perket	7 / 7
COCI '08 Contest 3 #2 Kemija	5 / 5
COCI '13 Contest 5 #3 Eksplozjia	5 / 10
COCI '16 Contest 2 #3 Nizin	10 / 10
COCI '17 Contest 1 #3 Lozinke	5 / 5
COCI '18 Contest 5 #2 Jarvis	5 / 5
COCI '20 Contest 6 #1 Bold	5 / 5

Problem	Score
DMOPC '14 Contest 2 P4 - Deforestation	7 / 7
DMOPC '14 Contest 7 P2 - Tides	5 / 5
DMOPC '15 Contest 6 P3 - Harvest	4.900 / 7
DMOPC '16 Contest 4 P2 - Systests	7 / 7
DMOPC '17 Contest 2 P2 - Balance	5 / 5
DMOPC '18 Contest 1 P0 - Sorting	3 / 3
DMOPC '18 Contest 1 P1 - Sorting	5 / 5
DMOPC '18 Contest 1 P2 - Sorting	5 / 5
DMOPC '18 Contest 2 P4 - Damage Output	7 / 7
DMOPC '18 Contest 5 P3 - A Familiar Problem	7 / 7
DMOPC '19 Contest 5 P1 - Conspicuous Cryptic Checklist	5 / 5
DMOPC '20 Contest 2 P1 - Laugh Graphs	5 / 5
DMOPC '20 Contest 7 P1 - Bob and Balance	7 / 7
DMOPC '21 Contest 4 P2 - Festive Groups	7 / 7
DMOPC '21 Contest 5 P1 - Permutations & Primes	5 / 5
DMOPC '21 Contest 5 P2 - Permutations & Primes	7 / 7
DMOPC '21 Contest 7 P1 - Chika Grids	5 / 5
DMOPC '22 Contest 1 P1 - Up-down Sequence	5 / 5

Problem	Score
DWITE '07 R2 #4 - All Is Balanced	5 / 5
DWITE '08 R3 #2 - Wordcount++	5 / 5
DWITE '10 R5 #2 - Safe from Rooks	5 / 5
DWITE '11 R4 #2 - Prime Time	5 / 5

User jianfeng

Points breakdown

AAC (5 points)

BlueBook (3 points)

CCC (489 points)

CIW (7 points)

Classics (8 points)

COCI (54 points)

DMOPC (101.900 points)

DWITE (20 points)

ECOO (10 points)

GFSSOC (10 points)

ICPC (7 points)

Mock CCC (62 points)

MWC (7 points)

SAC Coding Challenge (22 points)

Seasonal (21 points)

TLE (10 points)

Uncategorized (140 points)

VM7WC (10 points)

Woburn Challenge (7.188 points)

Problem	Score
ECOO '19 R1 P1 - Free Shirts	5 / 5
ECOO '19 R2 P1 - Email	5 / 5

Problem	Score
Mock CCC '20 S2 - Flipper Redux	7 / 7
Mock CCC '22 Contest 1 J3 - String Crossing Maximization	7 / 7
Mock CCC '22 Contest 2 J1 - Opening Ceremony	3 / 3
Mock CCC '22 Contest 2 J2 - Snowboarding Championship	3 / 3
Mock CCC '22 Contest 2 J3 - Figure Skating Fun	5 / 5
Mock CCC '23 Contest 1 J1 - Final Velocity	3 / 3
Mock CCC '23 Contest 1 J2 - Healthy Schedule	3 / 3
Mock CCC '23 Contest 1 J3 - Pairing Gifts	5 / 5
Mock CCC '14 S3 - Spreadsheet Sorting	7 / 7
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 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

Problem	Score
SAC '22 Code Challenge 3 Junior P2 - Normal Lines	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 5 Junior P3 - Media List	5 / 5

Problem	Score
Back From Summer '17 P2: Crayola Lightsaber	7 / 7
Back To School '18: Letter Frequency	7 / 7
New Year's '17 P1 - Mr. N and Presents	7 / 7

Problem	Score
TLE '16 Contest 6 (Mock CCC) S1 - Writing the CCC	5 / 5
TLE '17 Contest 2 P2 - Unlucky Numbers	5 / 5

Problem	Score
Appleby Contest '19 P4 - Rectangles	7 / 7
Arcadia Computing Contest 1 P3 - ScanTron	5 / 5
Sum of Primes 2	5 / 5
Amplitude Hackathon '23 Practice Problem 2 - Go Amplitude!	5 / 5
Another Sorting	5 / 5
Palindromic Integer Partition	5 / 5
BPC 1 S1 - Homework Questions	5 / 5
BSSPC '21 J5 - James and the Euclid Test	7 / 7
Cheerio Contest 1 J3 - Festival	5 / 5
Dr. Anne Anderson Coding Contest 1 P4 - Lighting	5 / 5
Word Scrambler	5 / 5
Count The Triplets	7 / 7
MMM '14 A - Distinct Prime Factors	7 / 7
Modulo Sort	5 / 5
OCC '19 S2 - Rimuru's Number Game	5 / 5
Postfix Notation	7 / 7
Prime Factorization	5 / 5
VMSS Pre-Windsor P7 - Going Back to the Definitions	7 / 7
Singularity Cup P1 - Maximum Permutation Product	5 / 5
The Cosmic Era P2 - Uneven Sand	5 / 5
The Cosmic Era P3 - Battle Positions	7 / 7
TSS Club Fair 2017 Problem B	7 / 7
Intertwined Strings	7 / 7
UTS Open '18 P3 - Restaurants	7 / 7

Problem	Score
VM7WC '16 #1 Bronze - A New Prime Factorization	5 / 5
VM7WC '16 #4 Silver - Tests or Test Cases?	5 / 5

Problem	Score
WC '18 Contest 1 S2 - Essay Generator	2.188 / 7
WC '96 P6 - Bases Multiplication	5 / 5