Cifre004

#include <iostream>
using namespace std;
int n,s,nrc;

int main()
{
    cin>>n;
    while(n)
        s+=n%10,n/=10;
    nrc=s;
    while(s>9)
        cout<<9,s-=9,--nrc;
    if(s)
        cout<<s,--nrc;
    for(int i=1;i<=nrc;++i)
        cout<<0;
    return 0;
}