#include <bits/stdc++.h>

using namespace std;
//判断回文数
bool isHWS(int num) {
    int t = num, ans = 0;
    while (t) {
        ans = ans * 10 + t % 10;
        t /= 10;
    }
    return ans == num;
}

int main() {
    vector<int> nums;
    int a = 123454321;
    while (a) {
        nums.push_back(a % 10); //5 4 3 2 1
        a /= 10;
    }
    int res = 0;
    for (int i = 0; i < nums.size(); i++)
        res = res * 10 + nums[i];
    cout << res << endl;
    return 0;
}