1000 
1000
400
100
+1
1000
1000
400
100
+42
1
2
1000
1000
400
100
+68
1
1000
1000
400
100
+29
1000
1000
400
100
+57
1000
1000
400
100
+7
1000
1000
400
100
+90
2
