Why?
4 l
0
1000 
1000
400
100
+92
1000
1000
400
100
+55
1000
1000
400
100
+106
1000
1000
400
100
+227
1000
1000
400
100
+50
1000
1000
400
100
+96
1000
1000
400
100
+86