#include <iostream>
#include <string>
using namespace std;
int main()
{
char tab[100];
int a,b;
cin.getline(tab,100);
a=char_traits<char>::length(tab);
b=a;
b--;
for(int i=0 ; i<a ; i++)
{
cout<<tab[b];
b--;
}
return 0;
}
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