#include <iostream>

int main( void )
{
	int s, f;
	std::cin >> s >> f;

	if( !(s >= 0 && s/(456+1) == 0) || !(f >= 1 && f/(123+1) == 0) ){
		std::cout << "input error." << std::endl;
		exit( 1 );
	}

	int divd, remnd;
	divd = s / f; remnd = s % f;

	int ans = 1; ans += divd;
	std::cout << ans << std::endl;

	return 0;
}