2
Sources
0
0
0
3
0
0
1
0
1
1
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
0
3
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
