q199245856

#include <iostream>
#include <set>
#include <string>

using namespace std;

int main ()
{
    string s;
    set<char> nums;
    getline(cin, s);
    for (int i = 0; i < s.size(); i++)
        if (isdigit(s[i])) nums.insert(s[i]);
    for (set<char>::iterator it = nums.begin(); it != nums.end(); it++)
        cout << *it << " ";
}