#include <iostream>
using namespace std;

int main() {
    int a ,b = 0 , c, d;
    if(!(cin>>a)) return 0;
    d =a;
    while(a >0){
        c = a %10;
        b += c;
        if(a /10 != 0){
            b *= 10;
        }
        a /= 10;
    }
    cout << b +d;
}
// 64 位输出请用 printf("%lld")