#include <stdio.h>
#include <stdlib.h>
#include <math.h>


int Integer(const void* a){
    int i = *((const int *) a);

    if(i % 2 == 0) return 1;
    return 0;
}


int Float(const void* a){
    double i = *((const double*)a);

    if(i < 0) i *= -1;

    int j = (int)i;
    return (i - j < 0.000001) && (j % 2 == 0);
}

int count_if(void *arr, int size, int k, int (*func)(const void *a)){
    int count = 0;


    for(int i = 0; i < k; ++i){
        if(func(arr + i*size)){
            ++count;
        }
    }

    return count;
}


int main(){
    int flag;
    scanf("%d", &flag);

    if(flag == 0) {
        int chaika_loh[20];
        int maks_krasava = 0;
        char c;

        for(int i = 0; i < 20; ++i){
            scanf("%d%c", &chaika_loh[i], &c);
            ++maks_krasava;

            if(c == '\n') break;
        }

        printf("%d", count_if(chaika_loh, 4, maks_krasava, Integer));
    }
    else {
        double arr[20];
        int count = 0;
        char c;

        for(int i = 0; i < 20; ++i){
            scanf("%lf%c", &arr[i], &c);
            ++count;

            if(c == '\n') break;
        }

        printf("%d", count_if(arr, 8, count, Float));
    }

}