// editor2
#include<stdio.h>
#include<string.h>
union s{
    int fts;
    float ptr;
};
struct emp{
    char name[50];
    int id,type;
    union s ss;
};
int main()){
    int n;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input\n");
        return 0;
    }
    struct emp e[10];
    float ts=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].ss.fts);
            ts+=e[i].ss.fts;
        }else if(e[i].type==2){
            scanf("%f",&e[i].ss.ptr);l;
            ts+=e[i].ss.ptr;
        }
    }
    printf("%.2f\n",ts);
    return 0;
}