#include <bits/stdc++.h>
using namespace std;
int n, a[(int)(1e5 + 10)];
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n;
for (int i = 1; i <= n; i++)
cin >> a[i];
int cnt = 0;
for (int i = 1; i <= n; i++)
if (a[i] % 2 == 0)
cnt++;
cout << cnt;
}
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