#include <stdio.h>
#include <math.h>

int main(void) {
	float x, y, r, f ;
	scanf(" %f  %f", &x, &y);
	if (x != 0) {
		r = sqrt(x*x+y*y) ;
		f = atan2 (y, x);
		printf("z =  %lg *(cos(%lg)  + i*sin(%lg))", r, f, f);
	}
	else printf("no answer");
	return 0;
}