#include
#include
using namespace std;
int main()
{
complex cmpx1(1, 0);
complex cmpx2(1, 1);
cout << cmpx1 << " " << cmpx2 << endl;
complex cmpx3 = cmpx1 + cmpx2;
cout << cmpx3 << endl;
cmpx3 += 10;
cout << cmpx3 << endl;
return 0;
}