#include
#include
using namespace std;
int main()
{
complex cmpx1(1, 0);
complex cmpx2(1, 1);
cout << cmpx1 << " " << cmpx2 << endl;
cmpx1 += 10;
cmpx2 += 10;
cout << cmpx1 << " " << cmpx2 << endl;
return 0;
}
(1,0) (1,1)
(11,0) (11,1)