Palindrom

#include <iostream>
#include <cmath>
using namespace std;
int main() {
    int n, a, c =10, flag = 1, size = 0;
    cin >>  n;
    while(n / c != 0) {
        size++;
        c *= 10;
    }
    for(int i = 1; i <= size; i++) {
        c = int(pow(10, i));
        a = int(pow(10, size  - i));
        if((n / c) % 10 != (n / a) % 10) {
            flag = 0;
        }
    }
    if(flag == 1) {
        cout << "YES";
    }
    else {
        cout << "NO";
    }
    return 0;
}