#include <iostream>
using namespace std;

int main() 
{
	char plus{},img{};
    double x{},y{};
    cin>> x >> plus >> y >> img;
    if (plus!='+' || img!='i') 
    	cout << "\nError: "<< "x=" << x <<", plus="  << plus <<", y="  << y <<", img="  << img;
    else
        cout << "\nComplex: " << x << plus << y << img;
    	
    
	return 0;
}