#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{
        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;
}