Khanh Do Ngoc

• Username: 3★happyboy99x
• Student/Professional:Student
• Institution:High School for Gifted Students, Hanoi University of Science Vietnam
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

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

Rating Graph

No. of Contests Participated: 5

Current Ratings Graph Old Ratings Graph

1648 (+56)RatingProvisional
Rating i Provisional Rating, click to know more

July Challenge 2014(2014-07-14 15:00:00)

Global Rank:   1646

Cheated in:   

Ratings System Update

(2014-07-14 15:00:00)

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?

1648 (+3)RatingProvisional
Rating i Provisional Rating, click to know more

July Challenge 2014(2022-12-20 00:00:00)

Global Rank:   1646

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 (0)

None

Practice Paths (0)

None

Contests (5)

February 2013 Challenge

Climbing Stairs, Buy1-Get1

April Challenge 2013

Barcelona Gameplay Tactics, Kingdom Unity, Maximum Weight Difference, Levy Conjecture

December Challenge 2013

Funny Marbles, Rectangular Queries, Reign, Magic Pairs, Chef and Codes, Cube Cakes

March Challenge 2014

Maximum number, GCD condition

July Challenge 2014

Garden Game, Chef and Frogs, Count Substrings, Dish Owner

Total Problems Solved: 42