class Solution: def s1(self): arr1 = list(input().strip()) arr2 = list(input().strip()) arr3 = [] arr4 = [] count = 0 for i in range(len(arr1)): if arr1[i]!=arr2[i]: arr3.append(arr1[i]) arr4.append(arr2[i]) for j in range(len(arr4)): if arr3[j]!=arr4[j]: s1 = j while s1<len(arr3): if arr3[s1]==arr4[j] and arr4[s1]!=arr4[j]: temp =arr3[s1] arr3[s1] =arr3[j] arr3[j] = temp count+=1 break s1+=1 for k in range(len(arr4)): if arr3[k]!=arr4[k]: count+=1 print(count) 侥幸A了😂