#include <cstring>
#include <algorithm>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int ans = 0;
    int t1 = n / 100;
    int t2 = n /10%10;
    int t3 = n % 10;
    if(t3 != 0)
    {
        ans =t3 * 100 + t2 * 10 + t1;
    }
    else 
    {
        ans = t2 * 10 + t1;
    }
    cout << ans <<endl;
    
}