#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
 
int main(int argc, char** argv) 
{
    	int cpt = (int)strtol(argv[1],NULL,0);
    	printf("%d : debut\n", getpid());

    	for (cpt ; cpt>=1; cpt--)
    	{
        	printf("%d : %d\n", getpid(), cpt);
        	sleep(1);
    	}
    	printf("%d : fin\n", getpid());
	return EXIT_SUCCESS;
}