哥 E題這么寫的，條件都沒想全，實(shí)在是受不了了[大哭]

import functools

n = int(input())

s1 = list(map(int, input()))

s2 = list(map(int, input()))

@functools.lru_cache(10000000000000)

def dfs(i, j):

if i < 0:

return 0

if j == s2[i]:

return dfs(i-1, s1[i-1])

if j > s2[i]:

return min(dfs(i-1, s1[i-1])+j-s2[i], dfs(i-1, s1[i-1]+1)+s2[i]+10-j)

else:

return min(dfs(i-1, s1[i-1])+s2[i]-j, dfs(i-1, s1[i-1]-1)+j+10-s2[i])

print(dfs(n-1, s1[n-1]))