题解 | #记负均正II#

#include<stdio.h>
int main(){
    double sum=0;
    int neg=0,zero=0,pos=0,d;
    while(~scanf("%d",&d)){
            neg+=d<0,zero+=d==0,pos+=d>0;
            sum+=d>=0?d:0;
    }
    printf("%d\n%.1f\n",neg+zero,zero+pos?sum/(pos+zero):0);
}