题解 | #记负均正II#

#include <iostream>
using namespace std;

int main() {
    int num_n = 0;
    int zero = 0;
    int count = 0;
    int num;
    double res = 0;
    while(cin>>num){
        if(num > 0){
            res = res*count;
            count++;
            res = (res+num)/count;
            continue;
        }if(num < 0){
            num_n ++;
            continue;
        }if(num == 0){
            zero++;
            continue;
        }
    }
    cout<<num_n<<endl;
    if(count==0){
        res = 0;
    }
    printf("%.1f\n",res);
}
// 64 位输出请用 printf("%lld")