#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;


struct P {
	int x;

	const bool operator<(P& p) const
	{
		return x<p.x;
	}
};
int main()
{
	vector<P> pp;
	pp.push_back(P{1});
	pp.push_back(P{10});
	pp.push_back(P{5});
	pp.push_back(P{200});
	pp.push_back(P{123});

	sort(pp.begin(), pp.end());

	for(auto i:pp)
	{
		cout<<i.x<<"\n";
	}
}