#include<stdio.h>
#include<string.h>
#define MAX_EMPLOYEES 100
union Salary{
    float fullTimeSalary;
    float partTimeHourlySalary;
};
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.partTimeHourlySalary;
        }
    }
    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.partTimrHourlySalary);
    }
}
    calculateSalaries(employees,n);
    return 0;
}