#include <iostream>
#include <fstream>
#include <string>
#include <vector>

int main(void) {

	//std::ifstream inf("Text.txt");	std::cin.rdbuf(inf.rdbuf());

	int A = 0, B = 0;
	std::cin >> A >> B;
	
	if (std::abs(B) % std::abs(A) == 0) {
		std::cout << B / A << std::endl;
	}
	else {
		std::cout << "NO" << std::endl;
	}

	return 0;
}