#include "maths.h"
#include <iostream>
#include <string>

int main(){
    while(true){
        std::string str;
        std::getline(std::cin, str);
        if(str == "quit") break;

        Equation eq(str.c_str());
        std::vector<Complex> root = eq.solve();

        for(unsigned i = 0; i < root.size(); i++)
            std::cout << root[i] << '\n';
    }
    return 0;
}