Problem:
Score : 200 points

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

Solution in Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        int N = 0;
        int[] a_i;
        int mas=0;
        Scanner scan = new Scanner(System.in);
        N = scan.nextInt();
        //if(!(1<=N))System.out.println("Nを1以上の数にしてね");
        a_i = new int[N];
        for(int i = 0;i<N;i++){
            a_i[i] = scan.nextInt();
        }
        for(int i = 0;i<N;i++){
            //if(!(a_i[i] <= 100))System.out.println("a_" + i + "を100いかにしてね");
           if(!((i+2)%2==0)){
               if(!((a_i[i]+2)%2==0))mas++;
           }
        }
        System.out.println(mas);
    }
}