Status: IN
A cell (r,c) has an odd value iff exactly one of `row_count[r]` and `col_count[c]` is odd; the return formula `odd_rows*(n-odd_cols) + (m-odd_rows)*odd_cols` computes this via two disjoint terms with no overlap.
Source: entries/2026/06/06/cells-with-odd-values-in-a-matrix-solution.md