#include<iostream>
#include<sstream>
using namespace std;
int main()
{
    strig i1,i2;
    cin>>i1>>i2;
    int a,b;
    stringstream ss1(i1),ss2(i2);
    if(!(ss1>>a||!(ss2>>b)||!(ss1>>eof())||!(ss2.eof()))
    {
        cout<<"Invalid input";
        return 0;
    }
    if (b==0)
    {
        cout<<"Divison by zero is not allowed";
        return 0;
    }
    cout<<a/b;
    return 0;
}