#include<iostream>
#include<cstring>
#include<cstdio>
#include<string>
using namespace std;
string s1;
int a[100],b[100];
int main()
{
	int i,n,ls1,lc,x,t;
	getline(cin,s1);
    cin>>t;
	ls1=s1.size();
	for(i=0;i<=ls1-1;i++)
	  a[i+1]=s1[i]-48;
	x=0;
	for(i=1;i<=ls1;i++)
	{
		b[i]=(x*10+a[i])/t;//（上一项余数*10+原数）/t
		x=(x*10+a[i])%t;//按位相除法
	}
	lc=1;
	while(b[lc]==0&&lc<ls1)
	  lc++;//删除前导零
	for(i=lc;i<=ls1;i++)
	{
		cout<<b[i];
	}
	return 0;
}