#include <bits/stdc++.h>
using namespace std;
ifstream fin("ech.in");
ofstream fout("ech.out");
const int NMAX=25;
string s;
int nr[NMAX*NMAX*NMAX],n,b[NMAX],nb;
inline int R()
{
    int r=0;
    for(int i=n;i>=1;i--)
        r=(r*10+nr[i])%11;
    return r;
}
inline void SUM()
{
    int t=0,cifra;
    if(n<nb)
    {
        for(int i=n+1;i<=nb;i++)
            nr[i]=0;
        n=nb;
    }
    else for(int i=nb+1;i<=n;i++)
        b[i]=0;
    for(int i=1;i<=n;i++)
    {
        cifra=nr[i]+b[i]+t;
        nr[i]=cifra%10;
        t=cifra/10;
    }
    if(t)
        nr[++n]=t;
}
inline bool CHECK()
{
    int s,s1;
    s=s1=0;
    for(int i=1;i<=n;i++)
        if(!(i&1))
            s+=nr[i];
        else s1+=(nr[i]);
    return (s==s1);
}
int main()
{
    fin>>s;
    for(int i=s.size()-1;i>=0;i--)
        nr[++n]=(s[i]-'0');
    int k=(11-R());
    while(k)
    {
        ++nb;
        b[nb]=k%10;
        k/=10;
    }
    SUM();
    nb=2;
    b[1]=b[2]=1;
    while(!CHECK())
        SUM();
    for(int i=n;i>=1;i--)
        fout<<nr[i];
    fin.close();
    fout.close();
    return 0;
}