#include <iostream>

using namespace std;

int flipIntNum(int num) {
    int ret = 0;
    while (num  > 0) {
        ret = ret * 10 + num % 10;
        num = num / 10;
    }
    return ret;
}

int main() {
    int a;
    while (cin >> a ) {
        cout << a + flipIntNum(a) << endl;
    }
}
// 64 位输出请用 printf("%lld")