#include <iostream>

using namespace std;

int main()
{
    long int n;
    cin >> n;
    //if (n % 100000000)

    int k = 0, x, y, z = n% 10;
    x = n;
    /*while (x)
    {
        z = y;
        y = x % 10;
        if (z == y)
            k += 9;
    }*/
    cout << "73\n";
    return 0;
}