rrr = input()
aaa = raw_input()
bbb = raw_input()
ans = 0
for i in range(len(aaa)):
  if aaa[i] != bbb[i]:
    ans = ans + 1
print ans
rrr = input()
aaa = raw_input()
bbb = raw_input()
ans = 0
for i in range(len(aaa)):
  if aaa[i] != bbb[i]:
    ans = ans + 1
print ans