Given is equilateral triangle $ABC$ with side length $n \geq 3$. It is divided into $n^2$ identical small equilateral triangles with side length $1$. On every vertex of the triangles there is a number. In a move we can choose a rhombus and add or subtract $1$ from all $4$ numbers on the vertices of the rhombus. Let point $D$ have coordinates $(3,2)$ where $3$ is the number of the row and $2$ is the position on it from left to right. On the vertices $A,B,C,D$ there are $1$'s and on the other vertices there are $0$'s. Is it possible, after some operations, all the numbers to become equal?