#include <stdio.h>
int a=0,b=0;
int acc(int x){
	if (x>=0)
	{
		a=a+x;
		b+=1;
		return a;
	}
	else if(x==-1)
	{
		return a;
	}
	else if(x==-2)
	{
		return b;
	}
	else if(x<=-3)
	{
		return -1;
	}
}
int main(void) {
printf("%d\n", acc(3));
printf("%d\n", acc(4));
printf("%d\n", acc(-3));
printf("%d\n", acc(-2));
printf("%d\n", acc(-1));
printf("%d\n", acc(5));
return 0;
}