Let `z_i(i=-1,2,3,4)` represent the vertices of a square allof which lie on the sides of the triangle with verices `(0,0), (2,1) and (3, 0)`, If `z_1 and z_2`, are pure purely real, then area of triangle formed by `z_3,z_4` and and origin is `m/n` (where m and n are in their lowest form), Find the value of `(m+n)`