ASU 314 All Soviet Union MO 1981 rectangular table bw squares, 75% related
Source:
July 23, 2019
combinatorial geometrycombinatoricsSquaresColoringtable
Problem Statement
Is it possible to fill a rectangular table with black and white squares (only) so, that the number of black squares will equal to the number of white squares, and each row and each column will have more than squares of the same colour?