bus size
1
1
1000 
1000
400
100
+57
1
1000
1000
400
100
+68
1
1000
1000
400
100
+200
1000
1000
400
100
+79
1
1000
1000
400
100
+115
1000
1000
400
100
+38
1000
1000
400
100
+158
1000
1000
400
100
+121
