#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <algorithm>
#define LEN 6*25
#include <vector>
using namespace std;
ifstream f("/Users/student/Desktop/innn.txt");
int main(){

    string s;
    f >> s;
    vector<int> v;
    int minv = 0;
    long min0 = 9999999;
    cout << s.length() << endl;
    while (s.length()){
        string p = s.substr(0, LEN);
        int c0 = count(p.begin(), p.end(), '0');
        int c1 = count(p.begin(), p.end(), '1');
        int c2 = count(p.begin(), p.end(), '2');
        if (c0 < min0){
            min0 = c0;
            minv = c1*c2;
        }
        v.push_back(p[0]-'0');
        v.push_back(p[24]-'0');
        v.push_back(p[5*24+1]-'0');
        v.push_back(p[LEN-1]-'0');
        s = s.substr(LEN);
    }
    //cout << minv << endl; //part 1;
    int x[5];
    for (int i = v.size()-1; i >= 0; i--){
            if (v[i] != 2){
                x[i%4] = v[i];
            }
    }
    for (int i = 0; i < 4; i++)
        cout << x[i];
    cout << endl;
}