#include<stdio.h>
union Salary
{
    int fullTime;
    float hourlyRate;
};

struct Employee
{
    char name[50];
    int id;
    int type;
    union Salary sal;
};

int main()
{
    int n;
    if(scanf("%d", &n) !=1 ) return 0;
    
    if(n<0)
    {
        printf("-1");
        return 0;
    }
    
    struct Employee emp;
    double total = 0.0;
    
    for (int i = 0; i < n; i++)
    {
        scanf("%s %d %d", emp.name, &emp.id, &emp.type);
        
        if(emp.type ==1)
        {
            scanf("%d", &emp.sal.fullTime);
            total += emp.sal.fullTime;
        }
        else if(emp.type == 2)
        {
            scanf("%f", &emp.sal.hourlyRate);
            total += emp.sal.hourlyRate * 160.0f;
        }
    }
    
    printf("%.2f", total`);
    return 0;
}