yhm = input()
ohm = input()
N = input()
r = []
for i in range(N):
    r.append(input())
    
s = 0
x = 0
N -= 1
while x < N:
    t = r[x]
    k = 0
    n = x + 1
    last = len(r)
    while n < last:
        if t == r[n]:
            k += 1 
        n += 1
    s += k
    if k == 0:
        x += 1
    else:
        x += k

f = (yhm + ohm) * s
print f