Leonardo Zhou

• Username: 5★lucky_ducky1
• Country:  Canada
• Student/Professional:Student
• Institution:University of Waterloo Canada
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2025 (Jul-Dec)2025 (Jan-Jun)2024 (Jul-Dec)2024 (Jan-Jun)

Rating Graph

No. of Contests Participated: 7

Current Ratings Graph Old Ratings Graph

2005 (+120)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 167 (Rated)(2025-01-01 22:00:02)

Global Rank:   38

Cheated in:   

Ratings System Update

(2025-01-01 22:00:02)

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1647 (+0)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 53 Division 3 (Rated)(2022-12-20 00:00:00)

Global Rank:   8

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

Learning Paths (1)

C++ Problem Solving

8%

Practice Paths (2)

Practice C++

3%

Practice for ZCO and INOI

4%

Contests (7)

August Long 2022 Division 4 (Rated)

Hello Equation, Two Trains, Maximum Submissions, Make A and B equal, Sale Season

Starters 52 Division 4 (Rated)

AI Analysing Code, Minimum Sum, WA Test Cases, Air Conditioner Temperature

August Lunchtime 2022 Division 4 (Rated)

Test Averages, Height of Rationals, Array Equality, Easy Permutation, Equalizing Numbers, Candy Distribution

Starters 53 Division 3 (Rated)

Weights, Odd Pairs, Queen Blocks, Make A and B equal, Black&White Ring Game

Starters 148 Division 2 (Rated)

Beautiful Flip, The Undisappearance, FightBots

Starters 149 (Rated)

Easy Subarray Sum, Maximise Sum, Chef Loves Beautiful Strings (Hard Version), Chef Loves Beautiful Strings (Easy Version)

Starters 167 (Rated)

Alternate Universe, Temperature Balance, Lottery Tickets, Delete Not Equal, Grid Construction (Even), Grid Construction (Odd)

Total Problems Solved: 83