import math

import os

import random

import re

import sys

class Item:

def __init__(self, name: str, price: int):

self.name = name

self.price = price

class ShoppingCart:

def __init__(self):

self.items = []

def add(self, item: Item):

self.items.append(item)

def total(self) -> int:

return sum(item.price for item in self.items)

def __len__(self):

return len(self.items)

if __name__ == '__main__':

fptr = open(os.environ['OUTPUT_PATH'], 'w')

n = int(input())

items = []

for _ in range(n):

name, price = input().split()

item = Item(name, int(price))

items.append(item)

cart = ShoppingCart()

q = int(input())

for _ in range(q):

line = input().split()

command, params = line[0], line[1:]

if command == "len":

fptr.write(str(len(cart)) + "\n")

elif command == "total":

fptr.write(str(cart.total()) + "\n")

elif command == "add":

name = params[0]

item = next(item for item in items if item.name == name)

cart.add(item)

else:

raise ValueError("Unknown command %s" % command)

fptr.close()