list=[]
n=input()
n=int(n)
a=len(n)
x=0
if n<0:
x="-"
for i in range(a):
list.append(n[a-i])
ans=0
for i in range(len(list)):
ans=list[i]*pow(10,len(list)-1)
if n==0:
print(0)
else:
if x==0:
print(ans)
else:
print(x+ans)