1.   . 2. -1500. 3. .
1. . 2. -1500. 3. .
4. . 5.-800 .,   -1000 . 6. -1000 .
4. . 5.-800 ., -1000 . 6. -1000 .
7. .1-1200 .
7. .1-1200 .
-3500. 3500.
-3500. 3500.