题解 | #记负均正#

#include <stdio.h>
int main() {
    //输入
    int n = 0;
    scanf("%d", &n);
    int i = 0;
    int m = 0;
    float sum = 0.0;
    int count1 = 0;
    int count2 = 0;
    while(n--)
    {
        scanf("%d", &m);
        if(m>0)
        {
            sum+=m;
            count1++;
        }
        if(m<0)
        count2++;
    }
    if(count1 == 0)
    printf("%d %.1f", count2, sum);
    else
    printf("%d %.1f", count2, sum/count1);
    return 0;
}