1000 
1000
400
100
+4
1000
1000
400
100
+5
1000
1000
400
100
+8
1000
1000
400
100
+1
1
1000
1000
400
100
+6
1000
1000
400
100
+56
1000
1000
400
100
+0
2
1000
1000
400
100
+64