//
//	compute total score,
//	# of students, and average score

#include <iostream>
using namespace std;

int main()
{
	float score;
	float total = 0.0;
	int size = 0;		// # of students

	cin >> score;
	while(cin)
	{	total += score;
		size ++;
		cin >> score;
	}
	cout << "Total score: " << total << endl;
	cout << "# of students: " << size << endl;
	cout << "Average score: " << total/size << endl;

	return 0;
}