Backflip
1000 
1000
400
100
+56
1
1000
1000
400
100
+37
1000
1000
400
100
+74
4
1000
1000
400
100
+48
1000
1000
400
100
+169
1000
1000
400
100
+59
1000
1000
400
100
+91
1000
1000
400
100
+214
| 1 | 2 |