N= 25  f= 20.174444
1   0
2   0
3   0
4   1
5   1
6   0
7   0
8   1
9   1
10   0
11   0
12   0
13   0
14   0
15   0
16   0
17   1
18   0
19   1
20   1
21   0
22   0
23   0
24   1
25   1