#include <stdio.h>
int main()
{
int x;
scanf("%d",&x);
int t;
int ret=0;
do
{
t=x%10;
ret=ret*10+t;
x/=10;
}while(x>0);
printf("%d",ret);
}
#include <stdio.h>
int main()
{
int x;
scanf("%d",&x);
int t;
int ret=0;
do
{
t=x%10;
ret=ret*10+t;
x/=10;
}while(x>0);
printf("%d",ret);
}