prem chhangani

• Username: 4★premchh2001
• Country:  India
• Student/Professional:Student
• Institution:Indian Institute of Technology Roorkee Uttarakhand, India
• CodeChef Pro Plan: No Active Plan. View Details

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

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No. of Contests Participated: 20

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Starters 46 Division 2 (Rated)(2022-07-06 23:00:02)

Global Rank:   339

Cheated in:   

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(2022-07-06 23:00:02)

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1893 (-86)RatingProvisional
Rating i Provisional Rating, click to know more

Starters 46 Division 2 (Rated)(2022-12-20 00:00:00)

Global Rank:   339

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 (20)

AlgoManiac - Code For Future Division 3 (Rated)

The Old Saint And Three Questions, Say No To Drugs, Meet In The Median

September Cook-Off 2021 Division 2

Zebra Crossing, Adjacency Hatred, Fake Swaps

SnackDown 2021 - Online Qualifiers

Lucky Number, Maximum Number Of Distinct Elements

CodeChef Starters 11 Division 3 (Rated)

The Grid Fill Problem, Find the Direction, Obtain the Sum, The Two Dishes

CodeChef Starters 14 Division 2 (Unrated)

Odd GCD, Diagonal movement, FIXFIX

October Cook-Off 2021 Division 2

Odd Sum, 01 Subsequence

October Lunchtime 2021 Division 2

Chef and Water Car, Exactly N plus 1 Values

SnackDown 2021 - Online Round 1A

Yet Another Flipping Problem, Round Robin Ranks , Dance Moves, Equal Beauty, Min Max LCM

SnackDown 2021 - Online Round 1B

Largest Laddu, Queens Placement

November Challenge 2021 Division 2 (Unrated)

Weird Palindrome Making, Hill Sequence, Equal Coins

CodeChef Starters 19 Division 2 (Rated)

Indivisible Permutation, Distinct Elements

December Challenge 2021 Division 2 (Unrated)

Valleys and Hills, List of Lists, Utkarsh and Placement tests

CodeChef Starters 22 Division 2 (Rated)

Equal LIS, Even Subset Xor, An Interesting Sequence

January Long 2022 - I, Division 2 (Unrated)

Keplers Law, Prime in a binary string, Retrieve back the Array, Covid Spread

Exun 2021-22 Division 2 (Rated)

Sarthak and his Magic Grid, Vedant and his Hidden Array, Aujasvit and the Circle Game

January Cook-Off 2022 Division 2

Palindromes Not Allowed, Mean Maximization, Subsegment Divisibility

January Lunchtime 2022 Division 2

Permutation XOR Sum, Subarray permutations, Prefix Zeros

CodeChef Starters 24 Division 2 (Rated)

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

February Long 2022 - I, Division 2 (Unrated)

Binary Base Basics, Bitwise Blend, N Queens Puzzle Solved !

CodeChef Starters 25 Division 2 (Rated)

Building Towers, Equal MEX, K Distinct Array, Points and Lines

February Cook-Off 2022 Division 2

Perfect Permutation, Prefix Permutation, PerMEXuation

February Long 2022 - II, Division 2 (Unrated)

Avoid Fixed Points, Xor Palindrome

March Long Two 2022, Division 2 (Unrated)

Same Parity Swaps in Binary Strings

CodeChef Starters 32 Division 2 (Rated)

Finding Shoes, Flip Sorting

May Long Two 2022 Division 2 (Unrated)

Xor Palindrome, Make them Zero

Starters 40 Division 2 (Unrated)

Good Pairs, Infinity Staircase, Or Permutation

July Cook-Off 2022 Division 2 (Rated)

Permutation And Median, Xor Permutation, Segmentation Fault

June Cook-Off 2022 Division 2 (Rated)

Simple XOR, Break the Stick, Split AND Sum

June Long One 2022 Division 2 (Unrated)

Reduce to zero, Divisible by i , Possible GCD, Alternate Additions, Equal Strings

Starters 43 Division 2 (Rated)

The Optimal Pairs, Distinct Palindrome, Permutation AND

June Lunchtime 2022 Division 2 (Rated)

Zero Ones Equal One Zeros, The Lost Array, Equal by XORing

Starters 45 Division 2 (Rated)

Even Equal Odd, Xor and Multiply, Retrieve the Array, Adjacent Sum Parity

Starters 46 Division 2 (Rated)

Prime Xor, Vowel Anxiety, Array sorting, Sort the String

Total Problems Solved: 503