#include<stdio.h>
int main(void)
{
	float a=1.0,b=1.0,A=0,B=0;
	int x,d=1;
	printf("please input cishu\n");
	scanf("%d",&x);
	for(;b<=x;b++,d=-d)
	{
		A=A+a/b;
		B=B+d*a/b;
	}
	printf("%f\n",A);
	printf("%f\n",B);
	return 0;
}