# include <stdio.h>
# define MAXN 5
/** Katametrisi thetikon stoixeion se pinaka **/
int main()
{
	int i,count=0;
	int x[MAXN];
	for(i=0;i<MAXN;i++)
	{
		printf("Dose stoixeio %d ?",i);
		scanf("%d",&x[i]);
	}
	for(i=0;i<MAXN;i++)
	{
		if(x[i]>=0) count++;
	}
	printf("Thetika stoixeia %d \n",count);
 return 0;
}