Problems
Even neighbours
Even neighbours
The sequence of integers is given. Count the number of elements with two even neighbours.
\InputFile
The first line contains the number of elements $n~(n \le 1000)$ in the sequence. The second line contains $n$ elements, each of them does not exceed $100$ by absolute value.
\OutputFile
Print the number of elements with two even neighbours.
Input example #1
6 1 2 3 4 5 6
Output example #1
2