#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector <int> a(n);
    for(int i = 0;i<n;++i){
        cin >> a[i];
    }
    int cur = 0;
    int ans = 1;
    int k;
    for(int i = 1;i<n;++i){
        if(i==1){
            k = a[i]-a[i-1];
            if(k%2!=0 || k==0){
                k = a[i+1]-a[i];
                ans++;
            }
        }
        else{
            if((a[i]-a[i-1])%2!=0){
                ans++;
                if(i==n-1)
                    break;
                k = a[i+1]-a[i];
            }
            else{
                int kl = a[i]-a[i-1];
                if(kl!=k || k==0){
                    ans++;
                    if(i==n-1)
                        break;
                    k = a[i+1]-a[i];
                }
            }
        }
    }
    cout << ans;
    return 0;
}