Odd-Even Double Block (435)

Shade 2 cells in every row and column. Fill the remaining cells with the numbers 1 to N, so that each number appears exactly once in every row and column. N equals the size of the grid minus 2. There are some numbers outside the grid and they indicate the sum of the numbers between the shaded cells in that row or column.
The cells with circles can contain only odd numbers. The cells with squares can contain only even numbers. Cells with squares and circles can be shaded.

Reference: WPC 2016 (65)