#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;
}

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