1
Sources
1
0
1
0
1
0
1
0
1
0
1
2
0
1
20K
1
2
0
1
0
0
1
0
1
0
0
0
1
1
1
0
0
0
1
0
0
1
0
0
6K
0
2
2
0
1
0
1
0
0
