#include <iostream>
using namespace std;
//自己构造一个反转函数
int reverseNumber(int num) {
    int reversed = 0;
    while (num > 0) {
        reversed = reversed * 10 + num % 10;
        num /= 10;
    }
    return reversed;
}

int main() {
    int a;
    cin >> a;

//应用函数
    int b = reverseNumber(a);

   
    int result = a + b;

    cout << result << endl;

    return 0;
}