users = new String[] { "Shopper1", "Shopper2", "Admin1", "Admin2" };
		passwords = new String[] { "pass1", "pass2", "pass3", "pass4" };
		userTypes = new boolean[] { false, false, true, true };
		cities = new String[] { "A", "B", "C", "D", "E", "F", "G", "H", "I",
				"J" };
		warehouses = new String[] { "A", "E", "I" };
		edges = new String[][] { { "A", "B" }, { "A", "C" }, { "A", "D" },
				{ "B", "D" }, { "B", "E" }, { "C", "D" }, { "C", "F" },
				{ "D", "E" }, { "D", "G" }, { "E", "H" }, { "F", "G" },
				{ "F", "I" }, { "G", "H" }, { "G", "I" }, { "G", "J" },
				{ "H", "J" }, { "I", "J" } };
		weights = new int[] { 20, 9, 12, 11, 13, 2, 10, 4, 17, 6, 7, 8, 16, 5,
				18, 2, 21 };
		categories = new String[] { "TSHIRT", "BOOK" };
		products = new String[] { "Blue T-Shirt L", "Grey T-Shirt S",
				"Red T-Shirt XL", "Introduction to Java" };
		prodQtys = new int[][] { { 100, 200, 300 }, { 50, 50, 50 },
				{ 300, 200, 100 }, { 1000, 2000, 3000 } };
		customers = new String[] { "Customer B", "Customer J" };
		streets = new String[] { "123 Bloor St", "123 Yonge St" };
		custCities = new String[] { "B", "J" };