User Ethan_Pronev

Points breakdown

25 / 25

AC | C++11

CCO '17 P6 - Shifty Grid

on July 9, 2020, 9:59 p.m.

30pp

weighted 100% (30pp)

100 / 100

AC | C++11

CCO Preparation Test 3 P3 - Arrow

on Dec. 9, 2019, 7:02 p.m.

30pp

weighted 95% (29pp)

150 / 150

AC | C++11

CCC '14 S5 - Lazy Fox

on Nov. 14, 2019, 6:22 p.m.

20pp

weighted 90% (18pp)

15 / 15

AC | C++11

CCC '25 S5 - To-Do List

on Oct. 9, 2025, 2:35 a.m.

17pp

weighted 86% (15pp)

100 / 100

AC | BF

CCCJQR P5

on Oct. 23, 2022, 5:17 p.m.

15pp

weighted 81% (12pp)

150 / 150

AC | C++11

CCO '11 P2 - Vampire Tunnels

on April 6, 2021, 3:44 p.m.

15pp

weighted 77% (12pp)

100 / 100

AC | C++11

Mock CCO '18 Contest 4 Problem 3 - Counterattack

on July 8, 2020, 9:59 p.m.

15pp

weighted 74% (11pp)

19 / 19

AC | C++11

CCO '12 P2 - The Hungary Games

on July 7, 2020, 5:28 p.m.

15pp

weighted 70% (10pp)

100 / 100

AC | C++11

CCC '10 S3 - Firehose

on Feb. 6, 2020, 11:07 p.m.

15pp

weighted 66% (10.0pp)

100 / 100

AC | C++11

MNYC '16: Rocks

on Feb. 1, 2020, 6:17 p.m.

15pp

weighted 63% (9.5pp)

Problem	Score
CCC '00 S1 - Slot Machines	5 / 5
CCC '00 S2 - Babbling Brooks	7 / 7
CCC '00 S4 - Golf	7 / 7
CCC '01 S3 - Strategic Bombing	7 / 7
CCC '04 J1 - Squares	3 / 3
CCC '05 J5 - Bananas	10 / 10
CCC '05 S2 - Mouse Move	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 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 '07 S5 - Bowling for Numbers	10 / 10
CCC '08 J1 - Body Mass Index	3 / 3
CCC '08 S2 - Pennies in the Ring	5 / 5
CCC '08 S3 - Maze	7 / 7
CCC '09 S2 - Lights Going On and Off	10 / 10
CCC '09 S4 - Shop and Ship	10 / 10
CCC '09 S5 - Wireless	12 / 12
CCC '10 J2 - Up and Down	5 / 5
CCC '10 J4 - Global Warming	5 / 5
CCC '10 J5 - Knight Hop	7 / 7
CCC '10 S3 - Firehose	15 / 15
CCC '10 S4 - Animal Farm	15 / 15
CCC '11 J4 - Boring Business	7 / 7
CCC '11 S2 - Multiple Choice	3 / 3
CCC '11 S3 - Alice Through the Looking Glass	10 / 10
CCC '12 J3 - Icon Scaling	3 / 3
CCC '12 S3 - Absolutely Acidic	7 / 7
CCC '12 S5 - Mouse Journey	7 / 7
CCC '13 J1 - Next in line	3 / 3
CCC '13 S1 - From 1987 to 2013	5 / 5
CCC '13 S3 - Chances of Winning	10 / 10
CCC '13 S4 - Who is Taller?	1.900 / 7
CCC '14 J1 - Triangle Times	3 / 3
CCC '14 S1 - Party Invitation	5 / 5
CCC '14 S3 - The Geneva Confection	7 / 7
CCC '14 S5 - Lazy Fox	20 / 20
CCC '15 J1 - Special Day	3 / 3
CCC '15 J5 - π-day	10 / 10
CCC '15 S2 - Jerseys	5 / 5
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 S1 - Ragaman	3 / 3
CCC '16 S2 - Tandem Bicycle	5 / 5
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 J4 - Favourite Times	5 / 5
CCC '17 S1 - Sum Game	3 / 3
CCC '17 S2 - High Tide, Low Tide	5 / 5
CCC '17 S3 - Nailed It!	7 / 7
CCC '17 S4 - Minimum Cost Flow	15 / 17
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 '18 S1 - Voronoi Villages	3 / 3
CCC '18 S2 - Sunflowers	5 / 5
CCC '18 S3 - RoboThieves	10 / 10
CCC '18 S4 - Balanced Trees	15 / 15
CCC '19 S3 - Arithmetic Square	12 / 12
CCC '20 J1 - Dog Treats	3 / 3
CCC '20 S2 - Escape Room	10 / 10
CCC '20 S4 - Swapping Seats	12 / 12
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 S1 - Positioning Peter's Paintings	3 / 3
CCC '25 S2 - Cryptogram Cracking Club	7 / 7
CCC '25 S3 - Pretty Pens	10 / 10
CCC '25 S4 - Floor is Lava	12 / 12
CCC '25 S5 - To-Do List	17 / 17
CCOQR '16 - Stupendous Bowties	10 / 10

Problem	Score
CCO '08 P4 - Herding	10 / 10
CCO '11 P2 - Vampire Tunnels	15 / 15
CCO '12 P2 - The Hungary Games	15 / 15
CCO '13 P2 - Tourney	12 / 12
CCO '17 P6 - Shifty Grid	30 / 30
CCO '18 P1 - Geese vs. Hawks	10 / 10

Problem	Score
Next Prime	5 / 5
Quine	10 / 10
Unique Elements	3 / 3
Single Source Shortest Path	7 / 7

Problem	Score
Disjoint Set Test	10 / 10
Segment Tree Test	10.500 / 15

Problem	Score
DMOPC '13 Contest 3 P5 - A Romantic Dinner	10 / 10
DMOPC '14 Contest 1 P3 - New Students	2.400 / 3
DMOPC '14 Contest 2 P4 - Deforestation	5 / 5
DMOPC '14 Exam Time P4 - Exam Delay	10 / 10
DMOPC '15 Contest 1 P5 - Lelei and Dragon Scales	10 / 10
DMOPC '15 Contest 3 P2 - Cheesecake Distribution	5 / 5
DMOPC '15 Contest 6 P2 - Tilt	5 / 5
DMOPC '16 Contest 1 P3 - Shoe Shopping	7 / 7
DMOPC '17 Contest 4 P1 - Ribbon Colouring Fun	5 / 5
DMOPC '17 Contest 5 P3 - Mimi and Primes	7 / 7
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 P0 - Mimi and Video Games	3 / 3
DMOPC '18 Contest 2 P1 - Pumpkin Patches	3 / 3
DMOPC '18 Contest 2 P2 - Booster Cushions	5 / 5
DMOPC '18 Contest 2 P4 - Damage Output	7 / 7
DMOPC '18 Contest 3 P0 - Bob and ICS Class	3 / 3
DMOPC '19 Contest 1 P0 - Range Finding	3 / 3
DMOPC '19 Contest 1 P1 - Test Scores	5 / 5
DMOPC '19 Contest 1 P2 - Good Writing	7 / 7
DMOPC '19 Contest 1 P6 - Bob and Binary Strings	3.750 / 25
DMOPC '19 Contest 2 P0 - Roller Coaster	3 / 3
DMOPC '19 Contest 2 P1 - Box and Whiskers	5 / 5
DMOPC '19 Contest 2 P2 - Squares	7 / 7
DMOPC '19 Contest 3 P0 - What is it?	3 / 3
DMOPC '19 Contest 3 P1 - Mode Finding	5 / 5
DMOPC '19 Contest 3 P2 - Generating Names	7 / 7
DMOPC '19 Contest 3 P3 - Majority	4.800 / 12
DMOPC '19 Contest 4 P0 - Yikes	3 / 3
DMOPC '19 Contest 6 P0 - Trivial Math	3 / 3
DMOPC '19 Contest 6 P2 - Grade 10 Math	7 / 7
DMOPC '19 Contest 6 P3 - Grade 11 Math	2 / 10
DMOPC '19 Contest 6 P4 - Grade 12 Math	1.500 / 15
DMOPC '20 Contest 1 P3 - Victor's Algorithm	7 / 7
DMOPC '22 Contest 2 P1 - DMOPC Crisis	5 / 5
DMOPC '22 Contest 2 P2 - Line Trace	7 / 7
DMOPC '22 Contest 3 P1 - Holiday Colouring	5 / 5
DMOPC '22 Contest 3 P2 - New Components	10 / 10
DMOPC '22 Contest 3 P5 - Alice Rebalancing	4 / 20
DMPG '15 B1 - Loner Phoner	3 / 3
DMPG '15 B2 - Trunk in Trunk	5 / 5
DMPG '15 B4 - Maximum Product	7 / 7
DMPG '15 B5 - Lux-urious S'mores	5 / 5
DMPG '17 B1 - Whale and Soul	3 / 3
DMPG '17 B2 - Yoda	2.400 / 3
DMPG '17 B5 - Hackathons	7 / 7
DMPG '17 B6 - Multiply and Surrender	7 / 7
DMPG '18 B1 - Pizza Orders	3 / 3
DMPG '18 B2 - Mimi and Modulus	3 / 3
DMPG '18 B3 - Shimpossible	7 / 7
DMPG '18 B4 - Shimnanigans	5 / 5
DMPG '18 B4 - Shimnanigans (Hard Version)	5 / 5
DMPG '18 B5 - Mimi and Substrings	7 / 7
DMPG '18 B6 - House of Cards	7 / 7
DMPG '19 B1 - Registration	3 / 3
DMPG '19 B2 - Rectangular Molecules	3 / 3
DMPG '19 B3 - Contact	3 / 3
DMPG '19 B4 - Braille	5 / 5
DMPG '19 B5 - Triangles	10 / 10
DMPG '19 B6 - Oddity	10 / 10
DMPG '19 S1 - Candy Shop Tycoon	5 / 5
DMPG '19 S2 - Code Cracking Crisis	7 / 7

User Ethan_Pronev

Points breakdown

CCC (575.900 points)

CCO (92 points)

China NOI (10 points)

Classics (25 points)

COCI (5 points)

Data Structure Tests (20.500 points)

DMOPC (330.850 points)

ECOO (34 points)

FHC (10 points)

GFSSOC (35 points)

IOI (25 points)

Mock CCC (76.133 points)

Mock CCO (62.250 points)

Seasonal (81 points)

TLE (10 points)

Uncategorized (282.200 points)

VM7WC (17 points)

Waterloo Local (20 points)

Woburn Challenge (23 points)

YAC (22 points)

Problem	Score
ECOO '12 R1 P3 - Triangles	5 / 5
ECOO '15 R1 P1 - When You Eat Your Smarties	5 / 5
ECOO '15 R1 P4 - Neanderthal Numbers	10 / 10
ECOO '18 R1 P4 - Fibonacci Spiral	7 / 7
ECOO '19 R1 P2 - L-Systems Go	5 / 5
ECOO '19 R2 P2 - Pizza	2 / 10

Problem	Score
GFSSOC '14 Winter J5 - Pursuit of Knowledge	10 / 10
GFSSOC '15 Fall J4 - Marathon	7 / 7
GFSSOC '15 Fall S4 - Mostly Talking	15 / 15
GFSSOC '15 Fall Practice P1 - Bruno and Trig	3 / 3

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 Contest 2 S1 - Arithmetic Hybercube	3 / 3
Mock CCC '20 Contest 2 S2 - 4D BBST on a DP	5 / 5
Mock CCC '18 Contest 1 J1 - A String Problem	3 / 3
Mock CCC '18 Contest 5 J5/S3 - Directed Graph Connectivity	7 / 7
Mock CCC '19 Contest 1 J1 - Pusheen's Report Card	3 / 3
Mock CCC '19 Contest 1 J2 - Pusheen OCR	3 / 3
Mock CCC '19 Contest 1 J3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri	3 / 3
Mock CCC '19 Contest 1 J4 - Pusheen Plays Neko Atsume	3 / 3
Mock CCC '19 Contest 1 J5 - Pusheen Designs a Sushi Boat	2.333 / 7
Mock CCC '19 Contest 1 S1 - Pusheen's Report Card	3 / 3
Mock CCC '19 Contest 1 S2 - Pusheen's Puzzle Present	5 / 5
Mock CCC '19 Contest 1 S3 - Pusheen Eats Tuna Sashimi and Tuna Nigiri	0.800 / 12
Mock CCC '19 Contest 2 J1 - Tudor Drinks Some Tea	3 / 3
Mock CCC '19 Contest 2 J2 - Tudor Drinks Some More Tea	3 / 3
Mock CCC '19 Contest 2 J3 - Tudor Buys Some Tea	3 / 3
Mock CCC '19 Contest 2 S1 - Tudor's Double Doors	3 / 3
Mock CCC '19 Contest 2 S2 - Tudor Puts A Goat On A Rope	3 / 3

Problem	Score
CCO Preparation Test 3 P3 - Arrow	30 / 30
CCO Preparation Test 6 P2 - An Easy Problem	12 / 12
Mock CCO '18 Contest 1 Problem 6 - A Combining Problem	5.250 / 15
Mock CCO '18 Contest 4 Problem 3 - Counterattack	15 / 15

Problem	Score
Back From Summer '17 P1: Pithy Pastimes	3 / 3
Back From Summer '17 P2: Crayola Lightsaber	7 / 7
Back To School '16: Cherry Tree	12 / 12
Back To School '19: H🅰️r🅰️mbe	3 / 3
CCCJQR P5	15 / 15
MNYC '16: Rocks	15 / 15
Piggy	7 / 7
Triway Cup '18 Summer F - Forget Me Not	5 / 5
Valentine's Day '15 P2 - Simon and Marcy	7 / 7
New Year's '19 P2 - Ball Sculpture	7 / 7

Problem	Score
Arcadia Computing Contest 2 P1 - Rejected	3 / 3
Arcadia Computing Contest 2 P2 - Tennis	5 / 5
Arcadia Computing Contest 2 P3 - Alternato	7 / 7
Arcadia Computing Contest 2 P4 - Choose Your Own Adventure!	7 / 7
Arcadia Computing Contest 2 P5 - lp0 is on fire!	10 / 10
A Noisy Class	7 / 7
A Plus B	3 / 3
List Minimum	3 / 3
List Minimum (Hard)	5 / 5
Cheerio Contest 1 S4 - Mystery Boxes	10 / 10
Ray's Tricky Connectivity	10 / 10
CPC '19 Contest 1 P0 - Shoes	3 / 3
CPC '19 Contest 1 P1 - Distance	3 / 3
CPC '19 Contest 1 P2 - Luggage	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 I - Coins	10 / 10
Fast Factorial Calculator	7 / 7
Fibonacci Sequence	1.500 / 15
GlobeX Cup '18 J1 - Rounding Errors	3 / 3
GlobeX Cup '18 J2 - Mark Gambling	5 / 5
GlobeX Cup '18 J3 - Good Numbers	5 / 5
GlobeX Cup '18 J4 - Magical Functions	7 / 7
GlobeX Cup '18 J5 - Errands	10 / 10
GlobeX Cup '19 J1 - Chess Master Winnie	3 / 3
GlobeX Cup '19 J2 - Winnie Waifu Wars	3 / 3
GlobeX Cup '19 J3 - Codex	5 / 5
GlobeX Cup '19 J4 - Winni's Lonely Card Game	5 / 5
Hello, World!	3 / 3
Infinity	3 / 3
LKP '18 Contest 1 P4 - Fun in Föràg	15 / 15
The Mirror	5 / 5
The Third Cellar	10 / 10
VMSS Pre-Pre-Windsor P1 - Mr. White's Carnival	3 / 3
VMSS Pre-Pre-Windsor P2 - Big Chess	3 / 3
VMSS Pre-Pre-Windsor P3 - SC2 Multitasking	3 / 3
Prime Factorization	5 / 5
The Cosmic Era P2 - Uneven Sand	5 / 5
The Cosmic Era P3 - Battle Positions	7 / 7
Python Infinite Loop	7 / 7
Bubble Sort	7 / 7
Total Destruction	10 / 10
Valentine's Day '19 J1 - Rainbow Rating	3 / 3
Valentine's Day '19 J2 - Pink!	3 / 3
Valentine's Day '19 J3 - Love!	7 / 7
Valentine's Day '19 J5 - Falling in Love	0.700 / 7
XOR	7 / 7

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 Silver - Jayden Eats Chocolate	7 / 7

Problem	Score
Waterloo 2022 Fall D - Course Selection	5 / 5
Waterloo 2023 Winter A - So I'll Max Out My Constructive Algorithm Skills	5 / 5
Waterloo 2023 Winter C - Sandpile on Clique	10 / 10

Problem	Score
WC '17 Contest 1 J1 - Canadian Accent	3 / 3
WC '17 Contest 1 J3 - Stanley	3 / 3
WC '17 Contest 1 J4 - Canuck Detection	5 / 5
WC '17 Contest 1 S1 - On the Rocks	5 / 5
WC '18 Finals S1 - Behind the Scenes	7 / 7

Problem	Score
Yet Another Contest 6 P1 - No More Separation	5 / 5
Yet Another Contest 6 P2 - No More Telemarketers	7 / 7
Yet Another Contest 6 P3 - No More Cell Phone Messaging	10 / 10