#include <stdio.h>
int acc(int x){
	static int a=0,b=0;//aが正、bが負//
	static int kaisu = 0;
	if(x>=0){
		a=a+x;
		kaisu++;
		return a;
	}
	if(x==-1)
	return a;
	if(x==-2)
	return kaisu;
	else
	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;
}