#include<stdio.h>
union Empsalary{
    int full_time_salary;
    float part_time_rate;
};
struct Employee{
    char name[50];
    int id;
    int type;
    union Empsalary salary;
};
int main(){
    int n;
    scanf("%d", &n);
    struct Employee e[n];
    float total=0;
    for(int i=0;i<n;i++){
        scanf("%s %d %d", e[i].name, &e[i].id, &e[i].type);
        if(e[i].type==1){
            scanf("%d", &e[i].salary.full_time_salary);
            total+=e[i].sa;ary.full_time_salary;
        else if(e[i].type==2){
            scanf("%f", &e[i].salary.part_time_rate);
            total+=e[i].salary.part_time_rate;
        }
    }
    printf("%.2f", total);
    return 0;
}