x

4

5

3

0

0

0

0

4

1

0

0

1

0

0

0

1000

0

0

1

0

0

1

0

0

500

3

0

0

1

0

0

1

0

1500

0

0

0

−3

0

−2

1

700

4

0

3

4

0

3

0

8500

0

5

0

−4

0

−3

0