a=input()
b=[]
for i in a:
  b.append(i)
i=len(b)-1
while i>=0:
  print(b[i],end="")
  i=i-1
/**************************************************************
	Problem: 1120
	User: admin
	Language: Python
	Result: Accepted
	Time:100 ms
	Memory:34244 kb
****************************************************************/