2024 J4 - Troublesome Keys

1og = input()
2after = input()
3quiet = '-'
4x=[]
5alpha='abcdefghijklmnopqrstuvwxyz'
6
7for i in alpha:
8    if (i in og) and (i not in after):
9        x.append(i)
10    elif i in after and i not in og:
11        replaced = i
12
13if len(og)>len(after):
14    if after.replace(replaced,x[0]) == og.replace(x[1],''): 
15        quiet = x[1]
16        sil = x[0]
17    else:
18        quiet = x[0]
19        sil = x[1]
20else:
21    sil = x[0]
22print(sil, replaced)
23print(quiet)