set<string> split(string s, int frag)
{
    set<string> uni;
    int len = s.length();
    for(int i = 0; i < len; i+= frag)
    {
        uni.insert(s.substr(i, frag));
    }

    return uni;
}

bool check(string str,string out)
{
    for(int i=0;i<out.size();i++)
    {
        if(str[i]!=out[i] && str[i]!='#')
            return 0;
    }
    return 1;
}

int main()
{
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);

    string out;
    string s;
    cin>>s;
    int len = s.length();

    for(int i = len/2; i>1;--i)
    {
        set<string> uni = split(s,i);
        if(uni.size() == 1)
        {
            out = *uni.begin();
            break;
        }
    }

    int n=out.length();

    int i=0;

    string res="";

    while(i+n<len)
    {
        string str=s.substr(i,i+n);
        if(check(str,out))
        {
            res+=((i+1)-'0');
        }
        i++;
    }

    return 0;

}