#include <iostream>
#include <vector>
#include <string>
#include <string.h>
#include <queue>
#include <bitset>
#include<numeric>
#include <unordered_map>
#include <iomanip>
#include <map>
#include <stack>
#include <set>
#include <algorithm>
#include <math.h>
using namespace std;
int main()
{
    long long a,b;
    while(~scanf("%lld%lld", &a,&b))
    {
        unsigned long long x = abs(a);
        unsigned long long y = abs(b);
        unsigned long long z = x / y;
        if((a>=0&&b>=0)||(a<0&&b<0))
            printf("%llu\n", z);
        else
        {
            if(x%y==0)
                printf("-%llu\n", z);
            else
                printf("-%llu\n", z+1);
        }
    }
    return 0;
}