#include<iostream> 
using namespace std;
string a;
int b;
const int N=1e6+532;
int a1[N],lena,c1[N],lenc,yu;
int main(){
	cin>>a>>b;
	lena=a.size();
	for(int i=0;i<lena;i++)a1[i] = a[i]-'0';
	for(int i=0;i<=lena;i++)
	{
		c1[i] = (yu*10+a1[i])/b;
		yu = (yu*10+a1[i])%b;
	}
	while(c1[lenc]==0&&lenc <lena-1)lenc++;
	for(int i=lenc;i<=lena-1;i++)cout<<c1[i];
	return 0;
}