0
cum
2
0
0
0
0
1
0
0
0
0
0
0
0
1
2
1
2
1
0
1
0
0
0
2
1
0
4
3
1
2
1
3
4
2
2
0
0
0
0
1
1
1
1
3
1
2
0
0
4
