#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#define MAX_SIZE 5000000


int main(void) {

        double start, finish;
        int i, c;

        start = clock();
        for (i=0; i <MAX_SIZE; i++) {
                c++;
        }
        finish = clock();

        printf("%lf", (start-finish));

        return 0;
}