#include<iostream>
#include<iomanip>
using namespace std;
class Product
{
public :
Product (){}
Product (int n,int q,double p):num(n),quantity(q),price(p){}
static void display()
{
cout<<sum<<endl;
cout<<average()<<endl;
}
void total();
static float average();
private:
static int n;//总销售件数
static float sum;//总销售额
static float discount;
int num;//售货员号
float price;//个人销售额
int quantity;//个人销售件数
};
void Product ::total()
{
n+=quantity;
if (quantity<=10)
{
sum=sum+ (1-discount)*price*quantity;
}
else
{
sum=sum+(1-discount)*price*quantity*0.98;
}
}
float Product ::average()
{
return (sum/n);
}
float Product::discount=0.05;
float Product::sum=0;
int Product::n=0;
int main()
{
const int NUM =10;
Product Prod[10];
int m,i;
cin>>m;
int num;
int quantity;
float price;
for(i=0; i<m; i++)
{
cin>>num>>quantity>>price;
Product temp(num,quantity,price);
Prod[i]=temp;
}
for(i=0; i<m; i++)
Prod[i].total();
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
Product::display();
return 0;
}