include

include

include

include

include

using namespace std; class Complex{ public: int real,imag; void input(){ string input; cin >> input;

size_t i_pos = input.find('i');
if (i_pos != string::npos) {
    size_t sign_pos = input.find("+i");
    if (sign_pos == string::npos)
        sign_pos = input.find("-i");
    if (sign_pos != string::npos) {
        real = stoi(input.substr(0, sign_pos)); 
        imag = stoi(input.substr(sign_pos + 2)); 
        if (input[sign_pos] == '-')
            imag = -imag;
    }
    }
}
Complex operator+(const Complex& other )
{
    Complex result;
    result.real=this->real+other.real;
    result.imag=this->imag+other.imag;
    return result;
}
friend ostream& operator<<(ostream& os, const Complex& c)
{
    os << c.real << "+i" << c.imag;
    return os;
}

};

int main() { Complex x,y; Complex result; x.input(); y.input(); result=x+y; cout<