def add(x,y):
    global b
    x = int(x)
    f = [y] * x
    b.extend(f)
def get(x):
    global b
    k = 0
    k = b.count(x)
    print(k)
def delete(x):
    x = int(x)
    global b
    b = b[:len(b) - x]
a = int(input())
b = []
for i in range(a):
    q = input().split()
    if q[0] == 'add':
        add(q[1],q[2])
    elif q[0] == 'get':
        get(q[1])
    elif q[0] == 'delete':
        delete(q[1])