#include <iostream>
#include <cmath>
using namespace std;
 
int main() {
	long long n;
	cin>>n;
	int f=floor(log10(n))+1;
	long long max=-1;int sum=0; long long q=0; long long ans=0;
	 long long t=0;
 
	for(int i=1;i<=f;i++){
		t=n;
		sum=0;
		while(t>0){
			int c=t%10;
			sum+=c;
			t/=10;
			}
			if(sum>max) {max=sum; ans=n;}
			q=pow(10,i);
 
			n=n-(n%(q*10))+(((n%(q*10))/q)-1)*(q)+9*(q/10)+(n%(q/10));
 
 
 
	}
	cout<<ans;
 
	return 0;
}

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