#!/usr/bin/env c
#include <stdio.h>

double f(double x) {
  return 1 / x;
}

int main(void) {
  int a = 1;
  int b = 2;

  int sum = 0;
  int dx = (b - a) / 1e6;
  int i;

  for (i = a; i <= b; i += dx) {
    sum += f(x) * dx;
  }

  printf("%d\n", sum);
  return 0;
}