#include <stdio.h>

void main()
{
  int i;
  double sum1,sum2;
  sum1=0;
  sum2=0;
  for(i=1;i<=1000;i++) sum1+=1.0/((double)i);
  for(i=1000;i>=1;i--) sum2+=1.0/((double)i);
  printf("sum1: %.15f\n", sum1);
  printf("sum2: %.15f\n", sum2);
}