#include<iostream>
using namespace std;

int main() {
    int a, b;
    
    if(!(cin >> a >> b)) {
        cout << "Invalid input"
        return 0;
    }
    if(b==0) {
        cout << "Division by zero is not allowed.";
        return 0;
    }
    cout << a / b;
    
    return 0;
}