Rahul Singh

• Username: 1★optimus_123
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Roorkee Uttarakhand, India
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 6

Current Ratings Graph Old Ratings Graph

1354 (+7)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2017(2017-09-11 15:00:00)

Global Rank:   7405

Cheated in:   

Ratings System Update

(2017-09-11 15:00:00)

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

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1354 (-125)RatingProvisional
Rating i Provisional Rating, click to know more

September Challenge 2017(2022-12-20 00:00:00)

Global Rank:   7405

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)

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Practice Paths (0)

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Contests (6)

November Lunchtime 2016

Chef and his Students

April Challenge 2017

Dish Of Life, Bear and Row 01, Similar Dishes

May Challenge 2017

Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers

September Challenge 2017

Minimum Good Permutation, Little Chef and Sums

May Lunchtime 2019 Division 2 (Unrated)

Dummy Palindromic Strings, Grid Tour, CV

Total Problems Solved: 36