#include <stdio.h>

struct cart1{
    char name[100];
    int id;
    float price;
};

int main(){
    
    int size,ind,total=0;
    scanf("%d",&size);
    if(size<0){
        printf("Invalid input");
        return 0;
    }
    struct cart1 cart[size];
    for(ind=0;ind<size;ind++){
        scanf("%s %d %f",cart[ind].name,&cart[ind].id,&cart[ind].price);
    }
    for(ind=0;ind<size;ind++){
        total+=cart[ind].price;
    }
    printf("%.2f",total);
    return 0;
}