1000 
1000
400
100
+84
2
1000
1000
400
100
+146
1000
1000
400
100
+171
1000
1000
400
100
+194
1000
1000
400
100
+23
1000
1000
400
100
+61
1000
1000
400
100
+119
1000
1000
400
100
+176