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    1. #include <iostream>
    2. using namespace std;
    3. int main(){
    4.     int num = 0;
    5.     int temp = 0;
    6.     while(cin>>num)
    7.     {
    8.         int num_negetive = 0;
    9.         int num_positive = 0;
    10.         float ave_positive = 0.0;
    11.         for(int i = 0;i<num;i++){
    12.             cin>>temp;
    13.             if(temp < 0){
    14.                 num_negetive++;
    15.             }
    16.             else if(temp > 0){
    17.                 num_positive++;
    18.                 ave_positive+=temp;
    19.             }
    20.         }
    21.         printf("%d %.1f\n",num_negetive,ave_positive/num_positive);
    22.     }
    23. }