#include <iostream>
#include <cstring>

using namespace std;

int main()
{
    while(!cin.fail()){
        string input = "";
        string output = "";
        int *a = new int[6];
        bool ok = false;
        getline(cin, input);

        if(input == "END" || input == "end"){ break; }

        for(int i=input.capacity(); i>=0; i--)
            {
                if(input[i] != 0 && input[i] == 48){
                    a[i] = 0;
                }else{
                    if(input[i] != 0 && !ok)
                    {
                        a[i] = ((input[i]-48)-1);
                        if((input[i] != 48))
                        {
                            ok = true;
                        }
                    }else if(input[i] != 0)
                    {
                        a[i] = (input[i]-48);
                    }
                }
            }
        if(!(a[0]==0 && a[1]==0 && a[2]==0 && a[3]==0 && a[4]==0 && a[5]==0))
        {
            for(int i=0; i<=(int)input.capacity(); i++)
            {
                    if(input[i] != 0)
                    cout << a[i];
            }

            cout << endl;
        }else if(input != "0"){
            cout << 0 << endl;
        }
    }

    return 0;
}