#include<stdio.h>
typedef struct product{
    char prodname[20];
    int ID;
    float price;
}dhar;
int main(){
    int size;
    int ind,itr;
    float total=0.0;
    scanf("%d",&size); 
    if(n<0 || n>10){
        printf("Invalid input");
        return 0;
    }
    dhar order[size];
    for(ind=0;ind<size;ind++){
        scanf("%s",order[ind].prodname);
        scanf("%d",&order[ind].ID);
        scanf("%f",&order[ind].price);
    
    for(itr=0;itr<strlen(arr[ind].prodname);itr++){
       if(!isalpha(arr[ind].name[itr])){
           printf("Invalid input");
           return 0;
       }
     
    }
    }
    for(ind=0;ind<size;ind++){
        total+=arr[ind].price;
    }
    printf("%.2f",total);
    return 0;
}