AA

• Username: 4★john_981
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Kharagpur West Bengal, India
• CodeChef Pro Plan: No Active Plan. View Details

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

Rating Graph

No. of Contests Participated: 23

Current Ratings Graph Old Ratings Graph

1924 (+1)RatingProvisional
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Starters 51 Division 2 (Rated)(2022-08-10 23:00:02)

Global Rank:   398

Cheated in:   

Ratings System Update

(2022-08-10 23:00:02)

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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1924 (-10)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 51 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   398

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?

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Contests (23)

June Challenge 2020 Division 2

The Tom and Jerry Game!, Even Matrix, Chef and Price Control, Chef and String, Chef and Icecream

July Cook-Off 2020 Division 2

Even-tual Reduction

August Cook-Off 2020 Division 2

Polygon Relationship, Chef and Work, K-Foldable String

June Cook-Off 2020 Division 2

Cache Hits, Max Mex

December Challenge 2020 Division 1

Positive Prefixes, Even Pair Sum

December Cook-Off 2020 Division 2

Self-Destructing Strings, Catch the Thief, Circle of Chaos, Minimum Attendance Requirement

UWCOI 2021 (Rated for all)

Hidden Numbers, Array Swaps

February Lunchtime 2021 Division 2

Palpal Strings, Coprime Range

March Challenge 2021 Division 2

Interesting XOR!

April Cook-Off 2021 Division 2

Tree Distances, OR of ANDs, Chocolate Monger

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1

June Lunchtime 2021 Division 2

From Rational to Binary, Unpleasant Ones, False Number

August Cook-Off 2021 Division 2

Different String, Chef and Closure, Equal Difference, Clear the Array

August Lunchtime 2021 Division 2

K-th Maximum, Just a Graph, Crossing Blocks

January Cook-Off 2022 Division 2

Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility , Merged LIS

January Lunchtime 2022 Division 2

Subarray permutations, Prefix Zeros, Permutation XOR Sum

CodeChef Starters 24 Division 2 (Rated)

Avoid Contact, Yet Another Constructive Problem

February Cook-Off 2022 Division 2

PerMEXuation , Prefix Permutation

Starters 45 Division 2 (Rated)

Adjacent Sum Parity, Retrieve the Array, Xor and Multiply, Even Equal Odd, KBG and GN-Theory

Starters 48 Division 2 (Rated)

Fill The Grid, Make Palindrome 2, Positive array

Starters 49 Division 2 (Rated)

Valid Minimum, Monks, High Frequency, Students-Far From Hostel

Starters 50 Division 2 (Rated)

Air Blimp, Permutation GCD, Sum Product Segments, Average Permutation

Starters 51 Division 2 (Rated)

Adjacent Xors, Split N, Copy and Paste, Different Medians

Total Problems Solved: 74