#include <iostream>

using namespace std;

int main()
{
    char a, b, c, d, e, f, g;
    cin >> a >> b >> c >> d >> e >> f >> g;
    cout << abs(a-b) << abs(b-c) << abs(d-c) << abs(e-d) << abs(f-e) << abs(g-f) << endl; 
    return 0;
}