def deposit(name, sum):
    bank[name] = bank.get(name, 0) + int(sum)
def withdraw(name, sum):
    bank[name] = bank.get(name, 0) - int(sum)
def balance(name):
    if name not in bank:
        print('ERROR')
    else:
        print(bank[name])
def income(percent):
    for k, v in bank.items():
        if v > 0:
            bank[k] = int(v * ((int(percent) / 100) + 1))
bank = dict()

operations_count = int(input())

for i in range(operations_count):
    line = input().split()
    if 'BALANCE' in line:
        balance(line[1])
    elif 'DEPOSIT' in line:
        deposit(line[1], line[2])
    elif 'WITHDRAW' in line:
        withdraw(line[1], line[2])
    elif 'INCOME' in line:
        income(line[1])
    else:
        withdraw(line[1], line[3])
        deposit(line[2], line[3])