#include <iostream>
    #include <complex>
     
    using namespace std;
    using namespace std::complex_literals;
     
     
    int main() {
     
    	complex<double> a = -1i * 42.0;
    	complex<double> b = a + 1.0i;
   // 	std::cout<<std::exp<std::complex<double>>(3.14159 * 1.0i);
    	return 0;
    }