#include <stdio.h>
#define for_i(i, range, inner)                                                 \
    {                                                                          \
        int i;                                                                 \
        for (i = 0; i < range; i++)                                            \
            inner;                                                             \
    }

int main() {
    int n, cnt=0;
    scanf("%d", &n);
    for_i(i, n, {
        int a;
        scanf("%d", &a);
        if (a % 2 == 0)
            cnt++;
    })
    printf("%d", cnt);
    return 0;
}