#include <stdio.h>
#include <stdlib.h>
#include <math.h>

int main(void) {
  double prem;
  double deux;
  double troi;
  double quat;
  double cinq;
  double sixi;
  prem =sqrt(fabs(log(0.5)));
  deux = (double) sin(3.1415/6);
  troi = (double) atan(pow(13, 2));
  quat = (double) pow(exp(-1), 4);
  cinq = (double) log(-3);
  sixi = (double) pow(sqrt(2), 2);
  printf("%lf %lf %lf %lf %lf %lf\n", prem, deux, troi, quat, cinq, sixi);
  return EXIT_SUCCESS;
}