import sys
input = sys.stdin.readline

N,M=map(int,input().split())
A,B=input().split()

alp = [3,2,1,2,4,3,1,3,1,1,3,1,3,2,1,2,2,2,1,2,1,1,1,2,2,1]
AB=''
min_len=min(N,M)
for i in range(min_len):
    AB += A[i] + B[i]

AB += A[min_len:] + B[min_len:]

lst = [alp[ord(i)-ord('A')] for i in AB]

for i in range(N+M-2):
    for j in range(N+M-1-i):
        lst[j] += lst[j+1]

print("{}%".format(lst[0] % 10*10 + lst[1] % 10))
