#include <iostream>
using namespace std;
int main() {
	long long N;
	int M;
	cin >> N >> M;
	do {
		if (N%M == 0) {
			cout << N / M << endl;
			return 0;
		}
		N -= 1000;
	} while (N > 0);
	cout << 0 << endl;
	return 0;
}