Preetam Roy Choudhury

December Cook-Off 2012

Packaging Cupcakes

September Challenge 2013

CAO Stage-1

November Challenge 2013

Uncle Johny

June Cook-Off 2014

Counting Flags

November Cook-Off 2014

Brackets

February Challenge 2014

Longest Common Pattern

April Challenge 2014

Farmer Feb, Shortest Path in Binary Trees

May Challenge 2014

Chef-jumping

June Challenge 2014

Chef and Subarray

July Challenge 2014

Count Substrings

September Challenge 2014

Fun with Rotation

October Challenge 2014

Chef and Ground

November Challenge 2014

Distinct Characters Subsequence

December Challenge 2014

Chef and Apple Trees

February Challenge 2015

Chef and Chain

March Challenge 2015

Chef and Notebooks

April Challenge 2015

Chef and Interview, Broken Telephone

July Challenge 2015

Bread, Chef and Cube

August Challenge 2015

Cooking Machine

September Challenge 2015

Count Steps in Matrix

October Challenge 2015

Count Subarrays

February Cook-Off 2015

Fit Squares in Triangle

April Cook-Off 2015

Version Control System

May Cook-Off 2015

Devu and friendship testing

July Cook-Off 2015

Cops and the Thief Devu

August Cook-Off 2015

Chef and the Wildcard Matching

February Lunchtime 2015

Lucky Four

February Challenge 2016

Chef-Detective

September Challenge 2016

Faded Palindromes, Chef and digits of a number

December Challenge 2016

Train Partner

April Challenge 2017

Similar Dishes

May Challenge 2017

Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers

June Challenge 2017

A Good Set, Xenny and Coin Rankings

July Challenge 2017

Whats in the Name, Calculator

September Challenge 2017

Chef and Pick Digit, Minimum Good Permutation

October Challenge 2017

A Balanced Contest

August Cook-Off 2017

From heaven to earth

August Lunchtime 2017

Mathison and pangrams

September Lunchtime 2017

Chef and Cook-Off Contests

January Challenge 2018

Rectangle

April Challenge 2018 Division 2

Workers

June Challenge 2018 Division 2

Naive Chef

September Challenge 2018 Division 2

Magician versus Chef

November Challenge 2018 Division 2

Chef and Difficult Contests

October Challenge 2018 Division 2

Chef and Serves

April Challenge 2019 Division 2

Maximum Remaining

October Mega Cook-Off 2019 Division 2

Medel

November Challenge 2019 Division 2

Weapon Value

December Challenge 2019 Division 2

That Is My Score!

September Long 2022 Division 4 (Rated)

Speed Limit Test, Bob at the Bank, Chef and Wire Frames

October Long 2022 Division 4 (Rated)

Podium Finish, Minimum Pizzas, Building Race

Problems Authored (15)

Problems Tested (0)

No Contribution

Editorials Contributed (15)