# include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
if (n > 0 || n == 0)
{
int ans = 0;
while (n != 0)
{
ans += n % 10;
ans *= 10;
n /= 10;
}
cout << ans << endl;
}
else
{
int ans = 0;
n = -n;
while (n != 0)
{
ans += n % 10;
ans *= 10;
n /= 10;
}
cout << -ans << endl;
}
return 0;
}
零分 (T_T)