#include <iostream>
using namespace std;
int main() {
int s = 0; // счетчик
int n = 0;
cin >> n;
while (n != 0){
if ((n % 2 == 0) && (n % 7 == 0)){
s = s + 1; // количество найденных чисел
}
cin >> n;
}
cout << s << "\n";
return 0;
}
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