#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;

int main()
{
    string s;
    cin >> s;
    while(1)
    {
        if (s == "END")
            return 0;
        int x = 0;
        for (unsigned int i = 0; i < s.length(); i++)
        {
            if (s[i] != '0')
                x = i;
        }
        s[x] -= 1;
        unsigned int result = atoi(s.c_str());
        cout << result << endl;
        cin >> s;
    }
    return 0;
}