#include<stdio.h>
#include<string.h>
union EmployeeData{
    int fullTimesalary;
    float partTimeRate;
};
struct Employee{
    char name[50];
    int i;
    int type;
    union EmployeeData date;
};
int main(){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("-1\n");
        return 0;
    }
    struct Employee employees[n];
    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.data.fullTimeSalary);
            totalSalary += employees[i].data.fullTimeSalary;
        }else{
            scanf("%d",&employees.data.partTimeSalary);
            totalSalary += employees[i].data.partTimeSalary* 2080;
        }
    }
    printf("%.2f\n",totalSalary);
}