4
1
2
0
1
0
4
1
2
1
2
0
0
1
0
1
0
1
2
2
0
1
0
1
0
0
1
0
0
0
2
0
1
1
0
0
0
0
2
0
1
0
1
0
1
0
1
0
0
0
0
1
0
0
1
0
1
0
0
0
0
1
0
1
1
1
0
1
0
1
0
1
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
2
0
0
0
0
0
0
0
