Repeat Evolution

2257. Count Unguarded Cells in the Grid

2 attempts over 346 days. This page compares how the solution size, thinking trace, and stuck markers changed between posts.

2 attempts

346 days apart

-4 line delta

7 best lines

0 thought lines

0 stuck attempts

Repeat lab Latest post Back to library LeetCode

Timeline Shape

Bars are normalized inside this problem, so the widest bar is the largest attempt in that metric.

Each card is a daily post, with local deltas from the previous attempt.

Attempt 1 · 21.11.2024

medium

Solution 11 lines

Thoughts 0 lines

compact kotlin

Count unseen cells in 2D matrix with guards and walls

Full post LeetCode

Attempt 2 · 02.11.2025

medium

Solution 7 lines

Thoughts 0 lines

compact kotlin

346 days later lines -4 chars -128 thoughts 0

Count unseen cells by rays from guards

Full post LeetCode

Compact generated readout from the first and latest attempts.

Solution size compressed

-4 lines, -128 chars.

Thinking trace steady

0 lines between first and latest attempt.

Best snapshot 02.11.2025

7 lines, 362 chars.

Honesty markers 0 stuck

0 stuck attempts, 0 one-liner attempts.