#include<stdio.h>
struct cart {
    char name[20];
    int id;
    float price;
};
int main() {
    int size,ind;
    float total;
    scanf("%d",&size);
    if(size<0) {
        printf("Invalid input");
        return 0;
    }
    struct cart c1[size];
    for(ind=0;ind<size;ind++) {
        scanf("%s",c1[ind].name);
        scanf("%d",c1[ind].id);
        scanf("%f",c1[ind].price);
    }
    for(ind=0;ind<size;ind++)
    {
    total+=c1[ind].price;
    printf("%f",total);
    return 0;
    }
}