package Algorithms;
import java.io.File;
import java.util.Scanner;
import java.util.*;

public class Driver {

	public static void main(String[] args) throws java.io.FileNotFoundException {

		Scanner scan = new Scanner(new File("src/Algorithms/input.txt"));
		int rows = 0;
		int columns = 0;
		scan.nextLine();
		while(scan.hasNextLine()) {
			rows++;
			Scanner colReader = new Scanner(scan.nextLine());
			columns = 0;
			while(colReader.hasNextDouble()) {
				columns++;
			}
		}

		rows = rows - 1;
		double arr[][] = new double[rows][columns];
		scan.close();

		scan = new Scanner(new File("array.txt"));
		int n = scan.nextInt();
		scan.nextLine();
		for(int i = 0; i < rows; i++) {
			for(int j = 0; j < columns; j++) {
				if(scan.hasNextDouble()) {
					arr[i][j] = scan.nextDouble();
				}
			}
		}
		double vector[] = new double[n];
		for(int i = 0;i < n; i++) {
			if(scan.hasNextDouble()){
				vector[i] = scan.nextDouble();
			}
		}
		scan.close();

		NaiveGaussianAlgorithm NGE = new NaiveGaussianAlgorithm();
		NGE.naiveGaussian(arr, vector);
		System.out.println(columns);
	}
}