#include <iostream>
#include <string>
#include <vector>                                                             
#include <algorithm>

using namespace std;

vector<pair<int, string>> list;

int main() {
	int one = 1, two = 2, three =3, five =5, six = 6;
	string bla = "bla";
	
	list.push_back( pair<int, string>(two, bla));
	list.push_back( pair<int, string>(one, bla));
	list.push_back( pair<int, string>(two, bla));
	list.push_back( pair<int, string>(six, bla));
	list.push_back( pair<int, string>(five, bla));
	
	sort(list.begin(), list.end());
	
	for(auto item : list) {
		cout << item.first << endl;
	}
}