Sofia Ishmiakova

• Username: 4★sonya123
• Country:  Russia
• Student/Professional:Professional
• Organisation:Freelancer
• 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: 14

Current Ratings Graph Old Ratings Graph

1809 (-66)RatingProvisional
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January Challenge 2021 Division 2(2021-01-11 15:00:02)

Global Rank:   3977

Cheated in:   

Ratings System Update

(2021-01-11 15:00:02)

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?

1809 (-10)RatingProvisional
Rating i Provisional Rating, click to know more

January Challenge 2021 Division 2(2022-12-20 00:00:00)

Global Rank:   3977

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 (14)

January Challenge 2018

Maximum Score, Rectangle, Partition the numbers, K-Concatenation

January Cook-Off 2018

Multiple of 3, Survive in ChocoLand

February Challenge 2018

Car-pal Tunnel, Permutation and Palindrome, (Challenge) Biased Committee, Points Inside A Polygon, Chef and odd queries, Chef And The Patents, Chef And His Characters, Chef And Land Labeling, Lucas Theorem, Broken Clock

February Cook-Off 2018

Chef and Cook-Off, Chef and Tuples, Chef and Line

February Lunchtime 2018

Jumping in the hills

March Challenge 2018 DIV 1

Chef and Easy Problem, Chef and Gcd Queries, Mix the Colors

August Challenge 2018 Division 2

Modular GCD, Spell Bob, Sheokand and Number, Problem Sort, Princess and Dragons

October Challenge 2018 Division 1

Appy and Balloons , Minimize Digitsum

July Challenge 2020 Division 1

Missing a Point

September Challenge 2020 Division 1

Chefina and Swap, Chef and Trump Cards, Find XOR, Ada Matrix

August Lunchtime 2020 Division 2

Mode of Frequencies, Ratings and Rankings, Alien Invasion , Game on a Strip

June Lunchtime 2020 Division 1

Maximum AND, Gold Mining

October Challenge 2020 Division 1

Inversions, Positive AND, Replace for X, D-Dimensional MST

January Challenge 2021 Division 2

Fair Elections

Total Problems Solved: 46