1000 
1000
400
100
+67
4
1
1
1000
1000
400
100
+80
1000
1000
400
100
+680
1000
1000
400
100
+112
1
1000
1000
400
100
+86
1000
1000
400
100
+86
1000
1000
400
100
+98
1000
1000
400
100
+72