Skyscrapers (Even/Odd) (1082)

Place a number from 1 to X (integers only) into each cell so that each number appears exactly once in each row and column. (X is the number of cells in each row.) Each number represents a skyscraper of its respective height. The numbers outside the grid indicate how many skyscrapers can be seen in the respective row or column from the respective direction; smaller skyscrapers are hidden behind higher ones. Some numbers may already be filled in for you.
A gray-shaded square inside a cell or outside the grid indicates an even number; a circle inside a cell or outside the grid indicates an odd number.

Reference: WPF (1)