2137
1
1
1000 
1000
400
100
+72
2
3
1000
1000
400
100
+168
1000
1000
400
100
+243
1000
1000
400
100
+52
1000
1000
400
100
+144
1000
1000
400
100
+105
1000
1000
400
100
+125