#include <bits/stdc++.h>

using namespace std;

template <typename T>
bool check_map_count(const map<T, int>& m, int size){
    int result = 0;

    for(auto p : m){
        if(p.second > 1){
            return false;
        }
        result += p.second;
    }

    return result == size;
}

int main(){
    ifstream input_file("input.txt");
    string text;

    input_file >> text;

    map<char, int> frame;

    for(unsigned int i = 0; i < text.length(); ++i){
        if(i >= 14){
            frame[text[i - 14]]--;
        }
        frame[text[i]]++;

        if(check_map_count(frame, 14)){
            for(auto p : frame){
                if(p.second > 0){
                    cout << p.first;
                }
            } cout << endl;
            cout << "Answer: " << i + 1 << endl;
            return 0;
        }
    }

    return 0;
}