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

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