#include<stdio.h>
#include<stdlib.h>
union Employeedata{
    int fullTimeSalary;
    float partTimeRate;
};
struct Employee {
    char name[50];
    int id;
    int type;
    union EmployeeData data;
};

int main(){
    int n;
    scanf("%d",&n);
    
     if(n < 0){
         printf("-1\n");
         return 0;
     }
     struct Emoloyees employees[10];
     double totalSalary = 0.0;
      
     for(int i = 0;i < n; i++) {
         scanf("%s %d %d",employees[i].name, &employees[i].id, &employees[i].type);
         
         if(employees[i].type == 1){
             scanf("%d",&employees[i].data.fullTimeSalary);
             total_salary += employees[i].data.fullTimeSalary;
         }else{
             scanf("%f",&employees[i].data.partTimeRate);
             total_salary += employees[i].data.partTimeRate * 2080;
         }
     }
     printf("%.2f\n",totalSalary);
     return 0;
}