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: Wrong Answer)

#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <unordered_map>
#define endl '\n';
#define all(v) ((v).begin()), ((v).end())
#define sz(s)               (int)s.size()
#define Ceil(x,y)             ((x+y-1)/y)
#define RT(x)           return cout<<x,0;
#define mem(x,y)    memset(x,y,sizeof(x))
#define vi                    vector<int>
#define pii                 pair<int,int>
#define fx(n)           fixed<<setprecision(n)
#define watch(x) cout<<(#x)<<" = "<<x<<endl
#define forr(i, n) for (int i = 0; i < int(n); i++)
typedef long long ll;
typedef unsigned long long ull;
typedef double dl;
const double PI = acos(-1), EPS = 1e-7;
const int OO = 0x3f3f3f3f, N = 1e7 + 5, MOD = 1e9 + 7;
using namespace std;
void fast() { std::ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL); }
int main()
{
	fast();
	int n;
	cin>>n;
	vector<int>v(n);
	ll ans=0;
	for(int i=0;i<n;i++)
    {
        cin>>v[i];
        if(i%2!=0 && v[i]%2!=0)
            ans++;
    }
    cout<<ans<<"\n";

    return 0;
}