// editor3
#include<stdio.h>
struct Ecommerce{
    char name[50];
    int id;
    float price;
    float Total;
};
int main(){
    int n;
    float Total;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
    }
    
    struct Ecommerce arr[n];
    for(int i=0;i<n;i++){
        scanf("%s %d %f",arr[i].name,&arr[i].id,&arr[i].price);
    }
    for(int i=0;i<n;i++){
         Total+=arr[i];
    }
    printf("%2f",Total);
    return 0;
}