#include <iostream>
using namespace std;
 
class Complex
{
	public:
		double real;
		double imag;
 
		friend istream& operator>>(istream& in, Complex& complex)
		{
			in >> complex.real;
			in >> complex.imag;
		}
 
		friend ostream& operator<<(ostream& out, const Complex& complex)
		{
			out << complex.real;
			out << complex.imag;
		}
};
 
int main() {
	// your code goes here
	Complex complex;
	cin >> complex;
	cout << complex;
	return 0;
}

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MS41LCAyLjU=

1.5, 2.5