// Tyler Rigsby, CSE 142
// Scans a file with gas prices of Belgium and USA, and reports
// the average of each.

import java.io.*;
import java.util.*;

public class GasPrices {
    public static void main(String[] args) throws FileNotFoundException {
        Scanner input = new Scanner(new File("gasprices.txt"));
        
        double belgiumPrices = 0;
        double usaPrices = 0;
        int count = 0;
        
        while (input.hasNext()) {
            belgiumPrices += input.nextDouble();
            usaPrices += input.nextDouble();
            input.next(); // ignore the date
            count++;
        }
        
        System.out.println("Average Belgium price: " + belgiumPrices / count);
        System.out.println("Average US price: " + usaPrices / count);
        
    }
}