#include <stdio.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <stdlib.h>

int *A;
int Id;

void brisi(int sig)
{
	(void) shmdt((char*) A);
	(void) shmctl(Id, IPC_RMID, NULL);
	exit(0);
}


int main(int argc, char *argv[])
{
  int i;
	int N = atoi(argv[1]); // atoi: string u int
	int M = atoi(argv[2]);


	Id=shmget(IPC_PRIVATE, sizeof(int), 0600);

	if(Id==-1){
		printf("Neuspjelo dohvacanje memorije");
		exit(0);
	}
	A=(int*)shmat(Id,NULL,0);
	*A=0;
	for(int j=0; j<N; j++){
		for (i = 0; i < M; i++){
   		switch (fork()) {
   		case 0:

      			*A+=1;
      			exit(0);
  		case -1:
      			printf("Nije bilo moguce stvoriti proces!");
			exit(1);
   		}
	}
	}
	while (i--) {
		wait (NULL);
	}

	printf("A=%d\n", *A);
	(void) wait (NULL);
	brisi(0);
 return 0;
}