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 JavaScript (Node.js 12.16.1) (judge verdict: Wrong Answer)

//let input = "15\n13 76 46 15 50 98 93 77 31 43 84 90 6 24 14";

function main(input){
  input = input.trim();
  let list0 = input.split("\n")[0];
  let list1 = input.split("\n")[1];
  let kousu = parseInt(list0);
  let list = list1.split(" ");
  let count = 0;
  for(let i=0; i<list.length; i++){
    list[i] = parseInt(list[i]);
    if( (i+1)%2!==0 && list[i]%2!==0 ){count++;}
  }
  console.log(count);
}
//main(input);
function main(input){ } main(require("fs").readFileSync("/dev/stdin", "utf8"));