#include <iostream>
#include <string> 
using namespace std;

string sucet2 (  string& st)
{
  int i = st[0] == '-'; // Solve first -
  bool flag = true;
  i--;
  for ( int a = st.size()-1  ; a > i; a--)
    {
      if ( flag && st[a] != '0' )
	{
	  flag = false;
	  st[a]--;
	  break;
	}
      
    }
  if ( st[i+1] == '0')
    return "0";
  return st;
}

int main ()
{
  std::ios_base::sync_with_stdio(false);
  string input;
  while ( cin >> input)
    {
      if (input == "END" )
	return 0;
      cout << sucet2(input) << endl;
      
    }
  return 0;
}