April Fools Day Contest E. MYSTERIOUS LANGUAGE

VK Cup 2012 Round 3 B. Ancient Berland Hieroglyphs

ABBYY Cup 2.0 - Hard E3. The Beaver’s Problem - 2

ABBYY Cup 2.0 - Hard E2. The Beaver’s Problem - 2

Croc Champ 2012 - Round 2 C. Playing with Superglue

661. Image Smoother

3 x 3 that can be applied to each cell of an image by rounding down the average of the cell and the eight surrounding cells (i.e., the average of the nine cells in the blue smoother). If one or more of the surrounding cells of a cell is not present, we do not consider it in the average (i.e., the average of the four cells in the red smoother).

Given an m x n integer matrix img

Dreamplay and Upside Down

Danny !

Suarez !

Coutinho !