#include <stdio.h>

int main(void) {
	 double y=0;
    double pol=0,otr=0;
    for(int i=1,z=1;i<1001;i++,z*=-1)
        y+=z/(double)i;
    printf("%1.22lf",y);
    for(int i=1,z=1;i<1001;i+=2)
        pol+=z/(double)i;
    for(int i=2,z=1;i<1001;i+=2)
        otr+=-1/(double)i;
    printf("\n\n%1.22lf",pol+otr);
	return 0;
}