#include <bits/stdc++.h>
using namespace std;
long long n, mx = 0, num, j = 0;

long check(long long n){
  long long s = 0;
  while (n > 0){
    s = s + n % 10;
    n = n / 10;
  }
  return s;
}
int main(){
//	freopen("C.in","r",stdin);
//	freopen("C.out","w",stdout);
	ios_base::sync_with_stdio(0);
  cin >> n;
  long long q = n;
  for(; q > 0; j++){
    q /= 10;
  }
  for(long long i = j*10-1; i <= n; i++){
    if(check(i) >= mx){
      mx = check(i);
      num = i;
    }
  }
  cout << num;
  return 0;
}