#include "stdafx.h"
#include <iostream>
#include <vector>

std::vector<int> getdigits(int num)
{
    std::vector<int> res;
    do {
        res.push_back(num%10);
        num /= 10;
    } while ( num > 0 );

    std::reverse(res.begin(), res.end());

    return res;
}

int main()
{
    int sum = 0;
    int largestNumb = 0;

    std::vector<int> firstVector;
    std::vector<int> secondVector;
    for (int y = 0; y <= 999; y++)
    {
        for (int x = 0; x <= 999; x++)
        {
            sum = x * y;

            firstVector = getdigits(sum);
            secondVector = firstVector;

            std::reverse(secondVector.begin(), secondVector.end());

            if (firstVector == secondVector)
            {
                if (sum > largestNumb)
                {
                    largestNumb = sum;
                }
            }
        }
    }
    std::cout << largestNumb << std::endl;

    return 0;
}