Problem Statement

We have $N$ squares assigned the numbers $1,2,3,\\ldots,N$. Each square has an integer written on it, and the integer written on Square $i$ is $a_i$.

How many squares $i$ satisfy both of the following conditions?

• The assigned number, $i$, is odd.
• The written integer is odd.

Constraints

• All values in input are integers.
• $1 \\leq N, a_i \\leq 100$

Input

Input is given from Standard Input in the following format:

$N$ $a_1$ $a_2$ $\\cdots$ $a_N$

Output

Print the number of squares that satisfy both of the conditions.

Sample Input 1

5
1 3 4 5 7

Sample Output 1

2

• Two squares, Square $1$ and $5$, satisfy both of the conditions.
• For Square $2$ and $4$, the assigned numbers are not odd.
• For Square $3$, the written integer is not odd.

Sample Input 2

15
13 76 46 15 50 98 93 77 31 43 84 90 6 24 14

Sample Output 2

3