#include<bits/stdc++.h>
using namespace std;
int main(){
    set<int> s;
    // write your code here......
    for (int i=0;i<5;i++){
        int it;
        cin >> it;
        s.insert(it);
    }
    set<int>::iterator iter;
    for(iter = s.begin(); iter != s.end(); ++iter){
        cout << *iter << " ";
    }
    return 0;
}