Abhishek Pandey

• Username: 5★bit2hal
• Country:  India
• Student/Professional:Student
• Institution:National Institute of Technology Silchar Assam, 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: 22

Current Ratings Graph Old Ratings Graph

2002 (-22)RatingProvisional
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Starters 73 Division 1 (Rated till 6-Stars)(2023-01-11 23:00:00)

Global Rank:   143

Cheated in:   

Ratings System Update

(2023-01-11 23:00:00)

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2031 (-105)RatingProvisional
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Starters 63 Division 1 (Rated for 5 & 6 stars)(2022-12-20 00:00:00)

Global Rank:   71

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

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Learning Paths (0)

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Practice Paths (0)

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Contests (22)

September Challenge 2020 Division 2

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

October Challenge 2020 Division 2

Positive AND

November Challenge 2020 Division 2

Ada and Dishes, Magical Candy Store, Iron, Magnet and Wall, Restore Sequence

December Challenge 2020 Division 2

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

March Cook-Off 2021 Division 2

Matrix XOR, Guess the Number, Consecutive Deletions

March Lunchtime 2021 Division 2

Dinner by Candlelight, Racing, Lunchtime

July Challenge 2021 Division 2 (Unrated)

XxOoRr, Chef vs Bharat, Optimal Denomination, K Path Query

CodeChef Starters 22 Division 2 (Rated)

Equal LIS, Even Subset Xor, An Interesting Sequence

Code Drive Division 2 (Rated)

Again XOR problem, Count Number of Peaks

January Long 2022 - I, Division 2 (Unrated)

Chef and Riffles

January Cook-Off 2022 Division 2

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

January Lunchtime 2022 Division 2

Prefix Zeros, Permutation XOR Sum, Subarray permutations

CodeChef Starters 24 Division 2 (Rated)

Anti Palindrome, Avoid Contact, Divisors and Reciprocals, Yet Another Constructive Problem

CodeChef Starters 25 Division 2 (Rated)

Building Towers, Equal MEX, Points and Lines

February Cook-Off 2022 Division 2

Prefix Permutation, PerMEXuation , Perfect Permutation

February Lunchtime 2022 Division 2

Four Equidistant Points on a Grid, Parallel Processing, Magnet Sort

March Long One 2022, Division 2 (Unrated)

Subarray XOR, MEX on Trees

CodeChef Starters 29 Division 2 (Rated)

String protocol, Plusle and Minun on Array, Increase 2 consecutive characters, Decomposition Reaction

CodeChef Starters 30 Division 2 (Rated)

Gift Shop and Coupon, Balanced Reversals, Maximizing LIS, Minimum Coloring

March Cook-Off 2022 Division 2

Fixed Weight, Janmansh at Fruit Market, Equal Mex Splitting, Alternating Divisibility

CodeChef Starters 31 Division 2 (Rated)

XOR and AND, Alternating String, Sign Moves, Mexy Array, The Unchanging OR

March Lunchtime 2022 Division 2

Sad Splits, Adjacency Love, Winter

CodeChef Starters 32 Division 1 (Unrated)

Maximize the Minimum, Finding Shoes, Flip Sorting

CodeChef Starters 33 Division 1 (Unrated)

Stable Mex

Starters 35 Division 1 (Unrated)

Chef Find XOR Beautiful

Starters 61 Division 1 (Unrated)

Palindrome Partition, Weird Subarrays, Red Blue Flowers, Subarray Removal

Starters 63 Division 1 (Rated for 5 & 6 stars)

Maximize 1s, Greedy Grid Moves, Minimum Absolute Score, Make Length 1, Count Partitions

Starters 70 Division 1 (Rated till 6-stars)

Prime Reversal, Frequency Array Retrieval

Starters 71 Division 1 (Unrated)

Flip the Prefix, Maximizing LCS

Starters 73 Division 1 (Rated till 6-Stars)

Find an integer, Consecutive Xor

Total Problems Solved: 140