#include <iostream>
using namespace std;
int hop(int k){
if (k%2==0) return 1;
else return 0;
}
int main() {
int n, m, i, s=0;
cin>>n;
for(i=0; i<n; i++){
cin>>m;
if (hop(m)) s++;}
cout<<s;
return 0;}
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