num = input()
rev = num[::-1]
if num == rev:
    print('yes')
else:
    print('no')

44bee7009a10419851132b42fcad2401b5f22a8b
<mask token>

<mask token>
if num == rev:
    print('yes')
else:
    print('no')

num = input()
rev = num[::-1]
if num == rev:
    print('yes')
else:
    print('no')
