// editor2
#include<stdio.h>
struct Employee
{
    char name[50];
    int id;
    int type;
    union 
    {
        int fullTimeSalary;
        float hourlyRate;
    }salary;
};
int main()
{
    int n;
    scanf("%d",&n);
    if(n<0)
    {
        printf("-1");
        return 0;
    }
    struct Employee emp[n];
    float totalSalary=0;
    for(int i=0;i<n;i++)
    {
        scanf("%s",emp[i].name);
        scanf("%d %d", &emp[i].id,&emp[i].type);
        if(emp[i].type==1)
        {
            scanf("%d",&emp[i].salary.fullTimeSalary);
            totalSalary+=emp[i].salary.fullTimeSalary;
        }
        else if(emp[i].type==2)
        {
            scanf("%f",&emp[i].salary.hourlyRate);
            totalSalary+=emp[i].salary.hourlyRate;        }
    }
}
         printf("%f",totalSalary);
         return 0;
}