//
//	Course:	CS311 Data ...
//	
//	File: 	avg.cpp
//	Author:	John Wang
//	Instructor:	Dr. Wang
//
//	Due: Wed. Sept. ..
//
//	Goal:	Read each line of data, out their avg
//		as well as avg for all lines
//


#include <iostream>

using namespace std;

int main()
{
	int var1, var2;		// hold two data
	float line_avg;
	float sum = 0.0;	// sum up avgs for all lines
	int num_line = 0;

	cin >> var1 >> var2;	// first line
	while(cin)		// EOF-ctrl loop
	{
		// processing here
		line_avg = (var1 + var2) / 2.0;
		cout << var1 << "\t" << var2 << "\t" 
			<< "AVG: " << line_avg << endl;
		sum += line_avg;
		num_line ++;

		cin >> var1 >> var2;	// read the next line
	}
	cout << "Total number of lines: " << num_line << endl;
	cout << "Total avg: " << sum << endl;
	
	return 0;
}