#include<iostream>
#include<typeinfo>
using namespace std;
int main()
{
    int a;
    
    
    cin>>a;
    string c;

    if(a==1)
    {
        int b;
        cin>>b;
        c=typeid(b).name()
        if(cin.fail())
        {
            cout<<"Invalid input";
        }
        else if(c=="i")
        {
            cout<<"1"
        }
        else
        {
            cout<<"0"
        }
        
    }
    else if(a==2)
    {
        float b;
         cin>>b;
          c=typeid(b).name()
        if(cin.fail())
        {
            cout<<"Invalid input";
        }
        else if(c=="i")
        {
            cout<<"1";
        }
        else
        {
            cout<<"0"
        }
    }
    else if(a!=1 or a!=2)
    {
        cout<<"-1";
    }
    else
    {
        cout<<"Invalid input";
    }
    
}