#include <stdio.h>
#include <sys/time.h>

int main() {
    struct timeval t;
    long s, us;

    gettimeofday (&t, NULL);

    s = (long) t.tv_sec;
    us = (long) t.tv_usec;

    printf ("%lu.%06lu\n", s, us);

    return 0;
}