otema

#include <iostream>
using namespace std;

int main()
{
    unsigned simp = 0, spare = 0, n, pos = 0;
    cin >> n;

    while (n)
    {
        unsigned cif = n % 10;
        if (pos % 2)
            simp += cif;
        else
            spare += cif;

        pos++;
        n /= 10;
    }

    if (!(spare % 2) && simp % 2)
        cout << 1;
    else
        cout << 0;

    return 0;
}