public class Matrix {
    int matrixRows;
    int matrixCols;
    int matrixSize;
    boolean matrixGrid[][];
    boolean state;
    Matrix(){}//matrix empty constructor
    Matrix (int r, int c){//creates rectangle matrix grid
        matrixRows = r;
        matrixCols = c;
        matrixGrid = new boolean[matrixRows][matrixCols];
    }
    Matrix (int size){//creates a square matrix grid
        matrixSize = size;
        matrixGrid = new boolean[matrixSize][matrixSize];
    }
    void set(int x, int y, boolean state){
        matrixGrid[x][y] = state;
    }
    boolean state(int x, int y){
        return matrixGrid[x][y];
    }
    int rows(){
        return matrixRows;
    }
    int cols(){
        return matrixCols;
    }
}