#include <stdio.h>
#include <math.h>
int main () {
    volatile float a, b, c, s, t;
    a = 1.0 / 5.0;
    b = 1.0 / 15.0;
    c = b; c += b; c += b;
    t = a - c;
    s = sqrt (t);
    printf ("%.9f %.9f %.9f\n%.9f %.9f\n", a, b, c, t, s);
    return 0;
}