1000 
1000
400
100
+1
1000
1000
400
100
+5
1000
1000
400
100
+7
1000
1000
400
100
+3
1000
1000
400
100
+7
1000
1000
400
100
+8
1000
1000
400
100
+1
1000
1000
400
100
+5
| 1 | 2 |
