反馈图

0
2
0
2
0
1
0
1
0
1
0
1
0
2
0
1
0
16
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1