#include <iostream>
#include<set> 
using namespace std;
 
class Athlete{
public: 
	string n;
	double t; 
	Athlete(string n, double t) : n(n), t(t) {}
	bool operator< (const Athlete a)const {
			return t < a.t;
		}
};
 
int main(){
	set<Athlete> s;
	set<Athlete>::iterator iter;
	s.insert(Athlete("James", 45.8)); s.insert(Athlete("Alex", 51.9));
	s.insert(Athlete("Nikolas", 47.9)); s.insert(Athlete("Luka", 49.6));
	for (const auto& athlete : s) {
        cout << athlete.n << " - " << athlete.t << " s" << endl;
    }
}

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