// Pair class
public class Pair {
    private int x, y;

    public Pair(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX( ) {
        return this.x;
    }

    public int getY( ) {
        return this.y;
    }

    public void setX(int x) {
        this.x = x;
    }

    public void setY(int y) {
        this.y = y;
    }

    @Override
    public String toString( ) {
        return String.format("(%d, %d)", this.x, this.y);
    }

    @Override
    public boolean equals(Object other) {
        return this.x == ((Pair) other).x &&
               this.x == ((Pair) other).y;
    }
}

//------------------------------------------------------

// Main class
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Pair p = new Pair(2, 3);
        Pair q = new Pair(5, 6);
        System.out.println(p + " " + q);

        File f = new File("input.txt");
        Scanner s = null;
        ArrayList<Pair> col = new ArrayList< >( );
        try {
            s = new Scanner(f);
        }
        catch (FileNotFoundException e) {
            System.out.println("File not found.");
            System.exit(1);
        }

        while(s.hasNextLine( )) {
            String line = s.nextLine( );
            String[ ] fields = line.split(",");
            int x = Integer.parseInt(fields[0]);
            int y = Integer.parseInt(fields[1]);
            Pair r = new Pair(x, y);
            col.add(r);
        }

        System.out.println(col);
    }
}