Tadek

• Username: 2★tadek
• Country:  Poland
• Student/Professional:Professional
• Organisation:Home
• 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)

Rating Graph

No. of Contests Participated: 28

Current Ratings Graph Old Ratings Graph

1559 (-16)RatingProvisional
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November Cook-Off 2021 Division 2(2021-11-22 00:00:02)

Global Rank:   2218

Cheated in:   

Ratings System Update

(2021-11-22 00:00:02)

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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1559 (-41)RatingProvisional
Rating i Provisional Rating, click to know more

November Cook-Off 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   2218

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 (28)

December Challenge 2019 Division 2

That Is My Score!, Plus Multiply, Addition

January Challenge 2020 Division 2

Chef and Dynamo, Doraemon, Equality, Breaking Bricks

February Challenge 2020 Division 2

No Change Required, The Theatre Problem, School of Geometry, Hard Cash, Long Contest and Cook Off Overlaps

March Challenge 2020 Division 2

XOR Engine, Pintu and Fruits, Ada Bishop 2

April Challenge 2020 Division 2

Strange Number, Sell All the Cars, COVID Pandemic and Long Queue

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

June Challenge 2020 Division 2

Chef and Price Control, The Tom and Jerry Game!, Chef and String, Even Matrix, Chef and Icecream

July Challenge 2020 Division 2

Ada King, Missing a Point, Chef and Card Game, Chef and Strings

August Challenge 2020 Division 2

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

September Challenge 2020 Division 2

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

October Challenge 2020 Division 2

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

November Challenge 2020 Division 2

Ada and Dishes, Restore Sequence

December Challenge 2020 Division 2

Even Pair Sum, Vaccine Distribution, Vaccine Production

December Lunchtime 2020 Division 2 (Unrated)

Three Letters, Sed Sequences, One Zero Swaps

November Cook-Off 2020 Division 2

Chef and IPC Certificates

October Lunchtime 2020 Division 2

AND Plus OR

January Challenge 2021 Division 3

Encoded String, Point Of Impact, Chef and Division 3, Fair Elections

February Challenge 2021 Division 3

Frog Sort, Chef and Meetings, Maximise Function, Highest Divisor

February Lunchtime 2021 Division 3

Daanish and Problems, Smallest Possible Whole Number, Coprime Range

March Challenge 2021 Division 2

Space Arrays, Interesting XOR!

April Challenge 2021 Division 3

Worthy Matrix, Chef and Dice, Valid Pair, World Record, Strong Language

April Cook-Off 2021 Division 2

OR of ANDs, Chocolate Monger

May Cook-Off 2021 Division 3

Marathon, Vaccine Drive

May Lunchtime 2021 Division 2

Charges, Tom And Jerry 1

May Challenge 2021 Division 2 (Rated)

Xor Equality

June Cook-Off 2021 Division 2

The Wave

September Cook-Off 2021 Division 2

Zebra Crossing, Adjacency Hatred

SnackDown 2021 - Online Qualifiers

Lucky Number

September Lunchtime 2021 Division 2

Balanced and Unique Arrays, Yet another SOD problem

November Cook-Off 2021 Division 2

Missing Sums

Weekend Dev Challenge 01

Project 1 - Code Breaker Challenge problem 1

Total Problems Solved: 145