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 C (GCC 9.2.1) (judge verdict: Accepted)

//
//  main.c
//  An Odd Problem
//
//  Created by k19031kk on 2020/07/11.
//  Copyright © 2020 AIT. All rights reserved.
//

#include <stdio.h>

int main(int argc, const char * argv[]) {
    
    int masu,count = 0;
    scanf("%d",&masu);
    
    int num[masu];
    
    for(int i=1;i<=masu;i++){
        scanf("%d",&num[i-1]);
        
        if((i % 2 == 1) && (num[i-1] % 2 == 1)){
            count += 1;
        }
    }
    
    printf("%d\n",count);
    return 0;
}