#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
int main()
{
    unsigned int num,l,i;
    cin>>num;
    l=log10(num)+1;
    char ans[l+1];
    i=l-1;
    while(num>0 && i>=0)
    {
        ans[i--]=(char)(num%10+48);
        num/=10;
    }
    ans[l]='\0';
    cout<<ans<<endl;
    return 0;
}