#include
#include
int main()
{
int i,num,n,ans,tt;
while(scanf("%d",&num)!=EOF)
{
ans=0;
n=3;//如果要求N位数反转,把n改了就好了
while(n!=0)
{
tt=num%10;
num/=10;
ans+=tt*pow((double)(10),(double)(--n));
}
printf("%d\n",ans);
}
return 0;
}