#28: 這裡有答案
n = int(input())
s = 0
while n > 0:
s = s * 10 + n % 10
n = n // 10
print(s)
ZeroJudge Forum
n = int(input())
s = 0
while n > 0:
s = s * 10 + n % 10
n = n // 10
print(s)