#include<stdio.h>
#include<string.h>
#define MAX_EMPLOYEES 100
union Salary{
    float fulltimeSalary;
    float partTimeHourlyRate;
};
struct Employee
{
    char name[50];
    int id;
    int type;
    union Salary salary;
};
void calculateSalaries(struct Employee employees[],int n){
    float totalSalaries=0.0;
    for(int i=0;i<n;i++){
        if(employees[i].type==1){
            totalSalaries += employees[i].salary.fulltimeSalary;
        }
        else if(employees[i].type==2){
            totalSalaries+=employees[i].salary.partyTimeHourlyRate;
        }
    }
    printf("%.2f\n",totalSalaries);
}
int main()
{
    struct Employee employees[MAX_EMPLOYEES];
    int n;
    scanf("%d", &n);
    if(n<0)
    {
        printf("-1");
        return 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("%f", &employees[i].salary.fullTimeSalary);
        }
        else if(employees[i].type==2)
        {
            scanf("%f",&employees[i].salary.partTimeHourlyRate);
        }
    }
    calculateSalaries(employees,n);
}