blackack21

• Username: 2★blackack21
• Country:  India
• Student/Professional:Other
• 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: 12

Current Ratings Graph Old Ratings Graph

1562 (+6)RatingProvisional
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Starters 144 Division 3 (Rated)(2024-07-24 22:00:04)

Global Rank:   1679

Cheated in:   

Ratings System Update

(2024-07-24 22:00:04)

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1421? (+0)RatingProvisional
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Starters 61 Division 4 (Rated)(2022-12-20 00:00:00)

Global Rank:   898

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

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Contests (12)

September Long 2022 Division 4 (Rated)

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

Starters 61 Division 4 (Rated)

Minimise LCS, Different Consecutive Characters , Subarray Removal, Reach on Time, Odd Sum Pair

Starters 73 Division 3 (Rated)

Lucky Numbers, Append for OR

Starters 74 Division 3 (Rated)

Odd Even Binary String, Minimal Inversions, Chef And Babla

Starters 75 Division 4 (Rated)

Prefix Ones, Three Powers of Two, Two Ranges, Saving Taxes, Profit Increment

January Long 2023 Division 4 (Rated)

Negative Product, Overspeeding Fine, Far from origin, Array Halves, Symmetric Swaps, Asymmetric Swaps, Minimize the Maximum

February Cook-Off 2023 Division 3 (Rated)

Take Not Less, Bi_lindrome!, Permutation and Modulus, Minimum Beauty , Netflix

Starters 81 Division 3 (Unrated)

Maximum Capacity

Starters 85 Division 3 (Rated)

Inside The Stadium, Can Chef , Efficient PAN Linking, Crazy Bishops on Chessboard

Starters 98 Division 3 (Rated)

3-Blast Palindrome, FIND A and B, Airport Management, Ball Distribution

Starters 142 Division 2 (Rated)

Chef loves Pizza Chef loves halfs

Starters 143 Division 3 (Rated)

Non-Divisor Array, Maximum Coins

Starters 144 Division 3 (Rated)

Budget Allotment, Savings Account

Total Problems Solved: 66