#include<iostream>
#include<cmath>
#include<string>
using namespace std;
class TechNumberChecker
{
    public:
    virtual int is TechNumber()=0;
    virtual TechNumberChecker(){}
};
class intTech:public TechNumberChecker
{
    long long num;
    public:
    intTech(long long n){num = n;}
    int is TechNumber()
    {
        string s=to_string(num);
        if(s.length()%2!=0)
        return 0;
        int mid=s.length()/2;
        long long first = stoll(s.substr(0,mid));
        long long second = stoll(s.substr(mid));
        long long sum = first+second;
        if(sum*sum == num)
        return 1;
        return 0;
    }
};
class FloatTech:public TechNumberChecker
{
    double num;
    public:
    FloatTech(double n){num = n;}
    int is TechNumber()
    {
        long long intPart = (long long)num;
        string s = to_string(intPart);
        if (s.length()%2! =0)
        return 0;
        int mid = s.length()/2;
        long long first = stoll(s.substr(0,mid));
        long long second = stoll(s.substr(mid));
        long long sum = first+second;
        if (sum* sum == intPart)
        return 1;
    }
};
int main()
{
    int keyType;
    cin>>keyType;
    if(keyType!=1&&keyType!=2)
    {
        cout<<-1;
        return 0;
    }
    TechNumberChecker*obj=NULL;
    if(keyType == 1)
    {
        long long n;
        if(!(cin>>n))
        {
            cout<<"Invalid input";
            return 0;
        }
        obj = new intTech(n);
    }
    else if(keyType == 2)
    {
        double f;
        if(!(cin>>f))
        {
            cout<<"Invalid input";
            return 0;
        }
        obj = new FloatTech(f);
    }
    cout<<obj->is TechNumber();
    delete obj;
    return 0;
    }