Md. Rifat Haider Chowdhury

• Username: 4★rifat_072
• Country:  Bangladesh
• Student/Professional:Student
• Institution:Khulna University of Engineering & Technology Khulna, Bangladesh
• 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: 16

Current Ratings Graph Old Ratings Graph

1815 (+28)RatingProvisional
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Exun Programming Prelims 2019 (Rated for all)(2019-10-15 18:00:00)

Global Rank:   135

Cheated in:   

Ratings System Update

(2019-10-15 18:00:00)

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1815 (-80)RatingProvisional
Rating i Provisional Rating, click to know more

Exun Programming Prelims 2019 (Rated for all)(2022-12-20 00:00:00)

Global Rank:   135

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 (16)

March Challenge 2017

Bear and Extra Number, Xenny and Alternating Tasks

April Challenge 2017

Dish Of Life, Bear and Row 01, Bear and Clique Distances, Similar Dishes

May Challenge 2017

Chef and Sub Array , Chef and his daily routine, Courses in an university, Blocked websites, Median of adjacent maximum numbers, Chef and Subsequences

June Challenge 2017

Triplets, Xenny and Coin Rankings, Chef and the Feast, A Good Set

September Challenge 2017

Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums

December Challenge 2017

Total Diamonds, Chef And his Cake, Penalty Shoot-out, Chef and Hamming Distance of arrays

April Lunchtime 2017

Bear and Segment 01

February Cook-Off 2018

Chef and Cook-Off

March Challenge 2018 DIV 2

Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Chef and Glove, A Big Sale, Pishty and Triangles, Mix the Colors

April Challenge 2018 Division 1

Cutting Plants, Highway Crossing, Count Good Prefixes

May Challenge 2018 Division 1

Dibs on Fibs

March Cook-Off 2019 Division 2

XOR N-bonacci Sequence, UEFA Champions League, Markers and Caps, Music Shopping

April Challenge 2019 Division 1

Subtree Removal

May Lunchtime 2019 Division 1 (Unrated)

Grid Tour, Abdullah and Toll Discounts, Reverse Maximisation

August Challenge 2019 Division 1

Guddu and his Mother, Encoding, Dilemma

October Challenge 2019 Division 1

Even Edges, Chef and Maximum Star Value, Array Modification

Exun Programming Prelims 2019 (Rated for all)

Weird Modulo Problem , Tennis Tournament, Chipped Tree

Total Problems Solved: 75