2
cum
0
1
1
0
1
1
2
1
1
2
3
1
6
1
2
2
2
1
2
5
2
1
1
2
2
1
0
3
2
0
2
1
0
2
1
2
1
1
0
1
1
1
1
2
0
1
1
1
2
