0
4500
4000
6000
5550
0
3100
4550
2950
4450
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4500
4000
0
3100
2950
0
0
6000
5550
4550
4450
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0