#include <fstream>
#include <iostream>
using namespace std;

int v[10];
int main() {

    ifstream f("numere.txt");
    int n;

    while (f >> n) {

        while (n > 0) {
            v[n % 10]++;
            n = n / 10;
        }
    }

    for (int i = 0; i < 10; i++)
        if (v[i] == 1)
            cout << i << " ";




    return 0;
}