#include <iostream>
#include <limits>

using namespace std;

int cifernySoucet(int x)
{
    int ret = 0;

    while(x > 0)
    {
        ret += x % 10;
        x /= 10;
    }

    return ret;
}

int main()
{
    long long x,y;


    while(cin >> x)
    {
        int cif = cifernySoucet(x);

        for(;x>=-21474836470;x--)
        {
            y=(x>0?x:x*(-1));
            if(cifernySoucet(y)==cif+1)
            {
                cout << x << endl;
                break;
            }
        }
    }

    return 0;
}