N= 25  f= 19.740000
1   1
2   0
3   0
4   1
5   0
6   0
7   0
8   1
9   0
10   1
11   0
12   1
13   0
14   0
15   0
16   0
17   1
18   0
19   1
20   0
21   0
22   0
23   0
24   0
25   1