#include <stdio.h>
int acc(int x){
	
	static int sum = 0;
	static int count = 0;
	
	if(x >= 0){
		sum += x;
		count++;
		return sum;
	}
	else if(x == -1){
		return sum;
	}
	else if(x == -2){
		return count;
	}
	else{
		sum = 0;
		count = 0;
		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;
}