1000 
1000
400
100
+20
1000
1000
400
100
+124
1
2
1
1000
1000
400
100
+147
1000
1000
400
100
+69
1000
1000
400
100
+87
1000
1000
400
100
+144
1000
1000
400
100
+130
4
