#include <iostream>
#include <cstdlib>

using namespace std;

bool isPalin(int n, int base) {
    int temp = n, reverse = 0;
    while (temp > 0) {
	reverse *= base;
	reverse += (temp % base);
	temp /= base;
    }
    return reverse == n;
}

int main() {
    int sum = 0;

    for (int i = 1; i < 1000000; ++i)
	if (isPalin(i, 2) && isPalin(i, 10))
	    sum += i;
    
    cout << sum << endl;
    
    return EXIT_SUCCESS;
}