#include <bits/stdc++.h>
using namespace std;
unsigned long long getnum(string t, unsigned long long k)
{
    unsigned long long res = 0;
    for (unsigned long long i = k; i < t.size(); i++)
        res = res * 10 + t[i] - '0';
    return res;
}
int main()
{
    string a, b;
    while (cin >> a >> b)
    {
        unsigned long long m, n;
        if ((a[0] == '-') + (b[0] == '-') == 1)
        {
            if (a[0] == '-')
            {
                m = getnum(a, 1);
                n = getnum(b, 0);
            }
            else
            {
                m = getnum(a, 0);
                n = getnum(b, 1);
            }
            if(m%n) cout<<'-'<<m/n+1<<'\n';
            else cout<<'-'<<m/n<<'\n';
        }
        else
        {
            if (a[0] == '-' && b[0] == '-')
            {
                m = getnum(a, 1);
                n = getnum(b, 1);
            }
            else
            {
                m = getnum(a, 0);
                n = getnum(b, 0);
            }
            cout<<m/n<<'\n';
        }
    }
}