Utkarsh Kumar Singh

• Username: 4★stunnerhash
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Information Technology, Allahabad Uttar Pradesh
• 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: 22

Current Ratings Graph Old Ratings Graph

1845 (-9)RatingProvisional
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Starters 198 (Rated)(2025-08-06 22:00:02)

Global Rank:   668

Cheated in:   

Ratings System Update

(2025-08-06 22:00:02)

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1867 (-2)RatingProvisional
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Starters 69 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   195

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)

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Practice Paths (0)

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Contests (22)

August Challenge 2020 Division 2

Another Card Game Problem, Chef and Linear Chess, Smallest KMP, Chef Wars - Return of the Jedi

September Challenge 2020 Division 2

Chefina and Swap, A Problem on Sticks, Ada Matrix, Coronavirus Spread 2

October Challenge 2020 Division 2

Covid Run, Chef and Easy Queries, Replace for X, Positive AND

November Challenge 2020 Division 2

Restore Sequence, Ada and Dishes, Iron, Magnet and Wall

January Challenge 2021 Division 2

Watching CPL, Fair Elections

December Challenge 2020 Division 2

String Operations, Vaccine Distribution, Vaccine Production, Positive Prefixes, Hail XOR, Even Pair Sum

September Cook-Off 2020 Division 2

Bulbs and Wires, Bowling Strategy

September Lunchtime 2020 Division 2

GCD operations, Watermelon

July Lunchtime 2022 Division 2 (Rated)

Yet Another Palindrome Making Problem, Largest Family, Maximum Median Matching, Consecutive XOR, Easy Pronunciation

Starters 48 Division 2 (Rated)

Fill The Grid, Make Palindrome 2, Positive array

Starters 50 Division 2 (Rated)

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

Starters 57 Division 2 (Unrated)

Maximum Expression, Even Splits, Two Different Palindromes

Starters 62 Division 2 (Rated)

Sorted Substrings, Make Multiple, Final Sum, Pythagorean Pair

Starters 65 Division 2 (Rated)

Nahaane Jaa, Candies, Binod

Starters 69 Division 2 (Rated)

Akash and Dinner, Make everything divisible by 3, Distinct Sequence

Starters 70 Division 2 (Rated)

Frequency Array Retrieval, Prime Reversal, Minimum distance between 1s

Starters 74 Division 2 (Rated)

Maximum Xor Sum, Lcm hates Gcd, Minimal Inversions, Odd Even Binary String

Starters 77 Division 2 (Rated)

Concat Palindrome, Three Numbers

Starters 78 Division 2 (Rated)

Bitwise Equation

Starters 85 Division 2 (Rated)

Crazy Bishops on Chessboard, Efficient PAN Linking, Inside The Stadium

Starters 102 Division 2 (Rated)

Bit Play

Starters 195 (Rated)

String Deletions, Marble Collector

Starters 198 (Rated)

Currency Exchange, Minimize Maximum Mex

Total Problems Solved: 97